take some inspiration from this bicycle planter, which you could purchase from Pottery Barn (for $250; it’s still available). But you, good reader, are the kind of person that makes stuff, and you could easily recreate something like this at home using an old bike, some inexpensive wire baskets, and a little paint.
Re-purpose a Bicycle Wheel to Make a Tree of Life
Re-purpose a bicycle wheel and make a tree of life. Full tutorial on the blog