Monogram 3D keyrings/bag clips (and sometimes magnets too)
Another collection within a collection and I'm mostly up to date with this one, yay~
There are 10 Lokis releases with 1 coming soon (or out now if you're American)!
#68225 Marvel - Series 3
#68280 Marvel - Series 9
#68760 Marvel Classic (Special)
#68940 Groot Collection - Series 2 (Special)
#68610 Venom - Series 1 (Special)
(This one I don't have)
#68710 Avengers Infinity Saga - Series 1 (Special)
#68715 What If ...? - Series 2 (Special)
#68735 MARVEL on Disney+ - Series 1 (Special)
#68735 MARVEL on Disney+ - Series 2 (Special)
and the most recent that I can't get here in the UK yet:
#68965 Marvel Villains (Special)
I'm on the look out for him!
These are typically available as bag clips in a blind bag. The first has a metal keyring instead.
Some are available to be bought separately as magnets, including the newest. Not sure which others.