They are not being manufactured anymore but it is still possible to buy new old stock. One guy is trying to keep them in circulation (he owns floppydisk.com) and I found a somewhat recent article that has some good info as well: https://www.raconteur.net/technology/the-floppygeddon-cometh

Or this one maybe, the only model I can find is t746.fr but I’m pretty sure this case design was available in other European countries.

Other cards like Care Credit may offer no interest for a period of time (Best Buy’s Citi card only offers that for Best Buy purchases). Best Buy also used to have two cards, one was a store card that could only be used at Best Buy, and the other one the Citi card. Not sure if the store card is still offered.