Thomas had seen an art show on TV in which they personalised plain canvas sneakers. Then we were in Target and saw this (Cue "Mu-umm?!?"):
Next, images were printed from the internet and stencils were cut from Contact adhesive plastic (good for stencils as it sticks to fabric and helps prevent bleeding a little).
Spray paint. Or sponge on fabric paint. Whatever you have.
Wear with pride.