I bought a fairly nice set of magnets for the kitchen wall (which is magnetic so you can stick all your kitchenware there) when I first moved it. strong, can hold some heavy stuff without budging, not too expensive as I recall
so I was like "ok I should get some more of those now that I know they're good"
the problem is I now have 4 sets of magnets on the kitchen wall. none of the other 3 were the right one despite me being convinced they were the ones I got before. one of them isn't even magnetic. it's a suction cup and I wasn't even reading