[vcf-midatlantic] Anyone coming to the workshop have any junk 8mm tapes?

One of the things I want to repair this weekend is an 8mm deck, but I realized that I don't have any "expendable" tapes to use for testing. Does anyone that's coming to the workshop have any junk tapes I can use for testing? Data or video, doesn't matter, just need a tape to test without worrying about destroying a tape I want to save. -Ian