Not clothing item but many years ago in California there were 99 cent stores and I purchased five pairs of water wings which gave me ten masturbation sleeves. They were easy to conceal at home and I only used one set before purchased real strokers at an adult porn store. I still remember how good those water wings felt.

Great thread and great links! Here is another that has not been mentioned yet:

Yandy

Boutinela is the best site ever for bikini girls

When I was a teenager, I masturbated incessantly over the underwear and swim sections of the Sears and JCP catalogues. If I had had access to Wicked Weasel back then, I never would have left the bathroom!