You can carry muiltiple big items with a jetpack

[Lorno43]

If you are carrying a big item then switch to the jet pack, you can pick up more items, including another big item. This can be fixed easily by making jet pack act like a big item if you are carrying a big item.

[Hamunii]

Okay, this is absolutely true, and I've mostly been just lazy and hoped people wouldn't abuse this. I'll look into this once I'm less busy with my other mods (and a guide)