The ideas range from the strange to the practical to whimsical and pretty darn cool. My thought is not to promote any specific idea but merely to show what is possible and perhaps start you on your own project, after a visit to Yesterday's Treasures of course!
So, whether you are looking at a specific piece you want, like a bookcase: or, you have materials but don't know what to do with them, check out upcycle ideas with Pinterest or better yet, stop in and ask for advice!