diff --git a/Cargo.toml b/Cargo.toml
index acf89b5..447f39d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -72,6 +72,10 @@ members = [
     "y2023/ex03",
     "y2023/ex04",
     "y2023/ex05",
+    "y2023/ex07",
+    "y2023/ex07",
+    "y2023/ex07",
+    "y2023/ex07",
 ]
 
 [profile.bench]
diff --git a/README.md b/README.md
index d999466..02f22f8 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,20 @@ cargo test --package ex01 --lib --all-features -- tests::part_2
 
 ## Create a new exercise
 
+**New**: You can now use the `scaffold.mjs` script to create a new exercise. Simply run:
+
+```bash
+./scaffold.mjs <year> <day>
+```
+
+(Note: it requires [`zx`](https://github.com/google/zx) to be installed).
+
+---
+
+
+Alternatively, you can create a new exercise manually by following these steps:
+
+
 Cd into the specific **year folder** (e.g. `y2020`) and run:
 
 ```bash
diff --git a/scaffold.mjs b/scaffold.mjs
new file mode 100755
index 0000000..971656f
--- /dev/null
+++ b/scaffold.mjs
@@ -0,0 +1,120 @@
+#!/usr/bin/env zx
+import fs from 'fs/promises'
+
+const year = process.argv[3]
+const day = process.argv[4]
+
+if (!year || !day) {
+    console.log('Usage: scaffold.mjs <year> <day>')
+    process.exit(1)
+}
+
+const yearDir = `y${year}`
+const dayDir = `ex${day.padStart(2, '0')}`
+
+// create year folder
+await $`mkdir -p ./${yearDir}`
+
+// Create rust project
+// await $`cd ./y${year} && cargo new --lib ${dayDir}`
+
+// update Cargo.toml
+const cargoToml = `[package]
+name = "${yearDir}${dayDir}"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+
+[[bench]]
+name = "bench_${yearDir}${dayDir}"
+harness = false
+
+[dev-dependencies]
+criterion = "0.5.1"
+`
+await fs.writeFile(`./${yearDir}/${dayDir}/Cargo.toml`, cargoToml)
+
+// Scaffold lib.rs
+const libRs = `
+pub fn part1(input: &str) -> usize {
+    0
+}
+
+pub fn part2(input: &str) -> usize {
+    0
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    const INPUT: &str = include_str!("../input.txt");
+
+    #[test]
+    fn test_part1() {
+        assert_eq!(part1(INPUT), 0);
+    }
+
+    #[test]
+    fn test_part2() {
+        assert_eq!(part2(INPUT), 0);
+    }
+}
+`
+await fs.writeFile(`./${yearDir}/${dayDir}/src/lib.rs`, libRs)
+
+// Create input.txt
+await fs.writeFile(`./${yearDir}/${dayDir}/input.txt`, '')
+
+// Create benchmark files
+const benchRs = `
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use ${yearDir}${dayDir}::{part1, part2};
+
+fn criterion_benchmark(c: &mut Criterion) {
+    let input = include_str!("../input.txt");
+    c.bench_function("${yearDir}${dayDir}::part1", |b| b.iter(|| part1(black_box(input))));
+    c.bench_function("${yearDir}${dayDir}::part2", |b| b.iter(|| part2(black_box(input))));
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);
+`
+await $`mkdir -p ./${yearDir}/${dayDir}/benches`
+await fs.writeFile(`./${yearDir}/${dayDir}/benches/bench_${yearDir}${dayDir}.rs`, benchRs)
+
+// updates Cargo.toml workspace
+const mainCargoToml = await fs.readFile('./Cargo.toml', 'utf8')
+const updatedCargoToml = mainCargoToml.replace(`]
+
+[profile.bench]
+debug = true`,
+    `    "${yearDir}/${dayDir}",
+]
+
+[profile.bench]
+debug = true`);
+await fs.writeFile('./Cargo.toml', updatedCargoToml)
+
+// format files
+await $`cd ./${yearDir}/${dayDir} && cargo fmt`
+
+// create README.md
+const readme = `# Day ${day}: TODO: ADD TITLE HERE
+
+[Check it out on adventofcode.com](https://adventofcode.com/${year}/day/${day})
+
+## Part One
+
+TODO: ADD DESCRIPTION HERE
+
+Your puzzle answer was \`?\`. (TODO: )
+
+## Part Two
+
+TODO: ADD DESCRIPTION HERE
+
+Your puzzle answer was \`?\`. (TODO: )`
+fs.writeFile(`./${yearDir}/${dayDir}/README.md`, readme)
diff --git a/y2023/ex07/Cargo.toml b/y2023/ex07/Cargo.toml
new file mode 100644
index 0000000..6813ef2
--- /dev/null
+++ b/y2023/ex07/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "y2023ex07"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+
+[[bench]]
+name = "bench_y2023ex07"
+harness = false
+
+[dev-dependencies]
+criterion = "0.5.1"
diff --git a/y2023/ex07/README.md b/y2023/ex07/README.md
new file mode 100644
index 0000000..c5fbd96
--- /dev/null
+++ b/y2023/ex07/README.md
@@ -0,0 +1,15 @@
+# Day 7: TODO: ADD TITLE HERE
+
+[Check it out on adventofcode.com](https://adventofcode.com/2023/day/7)
+
+## Part One
+
+TODO: ADD DESCRIPTION HERE
+
+Your puzzle answer was `?`. (TODO: )
+
+## Part Two
+
+TODO: ADD DESCRIPTION HERE
+
+Your puzzle answer was `?`. (TODO: )
diff --git a/y2023/ex07/benches/bench_y2023ex07.rs b/y2023/ex07/benches/bench_y2023ex07.rs
new file mode 100644
index 0000000..3604e70
--- /dev/null
+++ b/y2023/ex07/benches/bench_y2023ex07.rs
@@ -0,0 +1,11 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use y2023ex07::{part1, part2};
+
+fn criterion_benchmark(c: &mut Criterion) {
+    let input = include_str!("../input.txt");
+    c.bench_function("y2023ex07::part1", |b| b.iter(|| part1(black_box(input))));
+    c.bench_function("y2023ex07::part2", |b| b.iter(|| part2(black_box(input))));
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);
diff --git a/y2023/ex07/input.txt b/y2023/ex07/input.txt
new file mode 100644
index 0000000..bda6e6b
--- /dev/null
+++ b/y2023/ex07/input.txt
@@ -0,0 +1,1000 @@
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\ No newline at end of file
diff --git a/y2023/ex07/src/lib.rs b/y2023/ex07/src/lib.rs
new file mode 100644
index 0000000..c517755
--- /dev/null
+++ b/y2023/ex07/src/lib.rs
@@ -0,0 +1,23 @@
+pub fn part1(input: &str) -> usize {
+    0
+}
+
+pub fn part2(input: &str) -> usize {
+    0
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    const INPUT: &str = include_str!("../input.txt");
+
+    #[test]
+    fn test_part1() {
+        assert_eq!(part1(INPUT), 0);
+    }
+
+    #[test]
+    fn test_part2() {
+        assert_eq!(part2(INPUT), 0);
+    }
+}