I personally use it for my domain name and a VPS. Not exactly illegal or requiring personal information.
As for cards that "you can buy in brick and mortar stores" - a) they will be affected by the same sanctions as normal cards, b) not even a thing in a lot of places (like, the only ones I have seen here are only sold at certain banks and only payable with a bank card). But yea, might indeed work well in certain cases!