Ideas for use with Paint Roller Naps

[MamaKauffman]

Hello
I have approx 50 paint roller naps (new) that my work was going to throw away - There must be some sort of kids craft that these can be used for - any ideas anyone?

[zadok]

piggy banks ~ make bases for each end and cut a small rectangle in the middle of one base
fuzzy bracelets ~ cut in thirds or so & dye different colors
maracas ~ add bases, a handle, & pebbles/dried beans/ w/e
cat toys ~ make bases & put a few bells inside (could add handle/ribbon/feathers)
tunnels for machbox cars ~ cut into tunnel shape & cover in duct tape

*craft for the kiddies that the adult has to make*
kid friendly mini conveyor roller slide ~ http://farm5.staticflickr.com/4126/5112406456_cabb6af62d_z.jpg