The internet: I looked at pictures of some public art installations by the crochet artist Olek. I did an image search on "crochet bicycle" and quickly found photos of bicycles that she'd completely covered in crochet and yarn. Cranks, rack-mounted child seat, cable housing... everything.
I like my free time. I like sorta-kinda being into crochet even though I only know one stitch and can still only make rectangles. I have goals. I'd like to get better and faster and start crocheting sleeves and scarves to cover sign posts, trees and bicycle racks. I want to make some colorful knotted yarn and decorate some public spaces. I've seen that stuff around, and it resonates with me. First I need to make a hat. Then maybe some little crochet cheeseburgers.
(search "yarn bombing")