I think going in for a Bosley consultation is up there...Bosley is the company that promises to get you hair on your bald head. I forgot how many miles it was for, 20k? Full disclosure: I still have a FULL body of hair on my head
Ever since I get snail mail from Bosley!
Dumpster diving at Wendy's also comes to mind too.
Oh, in a Blues Angels air show the place was full of Coke caps, back in the day when the Coke rewards points were useful...Me and son went to work and left with full bags...not saying how many to preserve my stellar reputation lol.
I also got some miles for giving Northwest a suggestion to fix the darn oxygen mask mechanism to deploy properly as I was the only one without it while everyone else was screaming and breathing it in on a flight somewhere over the ocean from Tokyo to Detroit...I could go on...