I'm a big proponent of "do it yourself". I think that's the spirit of the OSR.
I like props/minis/stuff at my game table and I always have. I don't particularly like the 4e approach where every character ability/spell/power/etc. is a card, but for unique magic items I like that a lot.
To that end, I have embraced Paizo's "gamer bling" cards. They're great, but they don't always fit what I have in mind. I've purchased several decks of their cards and I've used them (mostly) with Savage Worlds.
But what to do with my CotMA game? Make them yourself!
Check out this site: GoDeckYourself.com. You build the cards and then export them as a PDF file for printing.
You can sign up for a free account and make cards that suit your fancy. You can distribute them to your players as they find magic items and other loot.
Here are the cards I've given to my players to represent the loot they've found. Enjoy!