Let’s face it, a hotel stay is basically a chance to collect things, whether it be sanctioned (mini-toiletry bottles) or not (bathrobes, tsk-tsk). But what about the hotel key cards themselves? As members of the TPG Lounge have shown, those seemingly unassuming rectangular squares can be primo souvenirs in their own right.Colorful CardsPhoto courtesy of Shuting Shao‎Shuting Shao‎ has been collecting different hotel key cards for four years running, resulting in a hefty, colorful collection.Full DeckPhoto courtesy of Rich LindellWhen you have a card collection the length of your iPhone — as Rich Lindell does — you’ve also got an amazing photo opp.Fishbowl LotteryPhoto courtesy of Debbi McCallamDebbi McCallam stashes her hotel cards matchbook-style: in a fishbowl on the coffee table.Refrigerator ArtPhoto courtesy of Peter AckerPeter Acker gets creative with some of his key cards, turning them into refrigerator magnets.Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.Laid BarePhoto courtesy of Caitlin Rose AndersonCaitlin Rose Anderson has arranged all her key cards by hotel brand, creating a mosaic-like grid.