Randy Sarafan made an Instructable on how to play mini golf anywhere with a Pringles can. He writes:
This is an easy way to quickly convert a Pringles can into a portable golf hole in a matter of minutes. This is intended both for those who like to play minigolf but are on a limited budget and those that live a highly mobile web 2.0 lifestyle. A special thanks goes out to Fungus Amungus who saw us trying to hit golf balls into a sideways Pringles can and suggested that we turn it upright and cut slits in it. When we just kinda shrugged and resumed what we were doing, he picked it up, cut some slits in it and plopped it back down. Sure enough, it worked great!
Via the Instructables Weekend Builder