These are just some ideas I've had, things I've made, and things I've seen other people make.
- A garden bug or animal sculpture - can take long
- A mailbox - long and somewhat hard
- A knife - takes a few hours and rather easy
- A pickax - takes a few hours, keeps you busy, and is decently difficult
- A side table
I hope you try these and please post things you've made, ideas you've had, and if you make one of the things above, please post that.