Joined: Jul 2010
Posts: 1,211
Likes: 427
From: Signal Mountain, TN
Bikes: '23 Black Mtn MC, '87 Bruce Gordon Chinook, '08 Jamis Aurora, '86 Trek 560, '97 Mongoose Rockadile, & '91 Trek 750
Two layers of hockey tape works great as time tape. Done it too much to not recommend it.
I've seen someone take a smaller flat tube, trim a hole for a stem and use it to line a rim as well. I can't remember if they trimmed the tube down too, where you're only using the inner side of a tube.