Build a barstool using only 2x4s. Tutorial at sawdustsisters.com
Modern DIY outdoor bench - 15 Practical DIY Woodworking Ideas for Your Home I like this bench. Simple to make, fairly clear instructions and a good cut list.
Make your own silicone molds with easy to find supplies! Free tutorial with pictures on how to make a molds in under 25 minutes by molding, resinworking, and with cornstarch, silicone, and americana acrylics.