A seat with simple stitches made from what looks like stashed yarn.

Not sure about those antennae on this lady bug seat.

Instead of reflectors, how's about some colorful wheel covers? You'd definitely get noticed in traffic.

Colorful fiber on bikes isn't just for girls, either. Dude! Love the furry cheetah seat!

Not to be out done, a crafty knitter whipped up a pair of fiber panniers complete with vintage knitting bag handles. Love the creativity!