Rubber on wall mounted bike hooks is wearing away. What can I use to cover them so my wheels don't get scratched?
@rclocher3's electrical tape is the easier way to go, but I often use strips of old tube to wrap things of this nature.  To keep the wrap in place I dab some vulcanizing fluid hither and thither along the underside.  This saves electrical tape for electrical things, is perhaps a bit more rugged than tape, and also provides fodder for people who would mock me on stackexchange.