I'm going to refuse to bring a vital piece of a project for teammates
Are you sure you don't want to bring it? What will your teammates do?
Yes, we can do everything with duct tape and some superglue.
I understand that you don't want to bring your item for the group project, but you shouldn't let your team down. If you have a good reason that you can't bring the item, let your team know. Otherwise, bring the item that you said you would bring.
Don't want to.
Then you ae letting your teammates down. You shouldn't do that if you can help it.