Analogous Color Shiney Bright Ornament Paintings from Color It Like you MEAN it!: It's beginning to look a lot like Christmas! http://criscoart.blogspot.com/2012/11/its-beginning-to-look-lot-like-christmas.html
Kaarisillan kuvataide: Ekaluokan Väinämöiset
These might be fun to make as clay slab tiles.
Veggie Garden -- We did something like this a couple years back with our old art teacher (3rd graders I think) only we did both root and above ground veggies AND flowers and it was done on a circle!