This is going to get a bit pic heavy so sorry in advance.
Probably the most unusual thing in my collection is Hanafuda playing cards. The only ones I collect are made by Nintendo. Most people are not aware that Nintendo started out as a Japanese playing card company back in the late 1800's, and they made Hanafuda cards among other types. The oldest decks I have date back to 1954.
All of these are made by Nintendo
Being an ex-Vegas dealer, I also have a collection of regular playing cards and Casino stuff
Here are some playing cards from the world series of poker 2008 and 2 decks made in 1935.
This Stargazer set of cards from bicycle have common makes that are almost indistinguishable from these but these are a rare guilded set that was limited to 200 sets. The approx value of this set when I bought it back in 2017-ish was about $1000. I didnt get a pic of it but the limited edition sets have gold seals and the regular sets have black seals.
These are regular playing cards but all of these are made by Nintendo.
I also collect comic books. Well not a whole lot any more but I have quite a bit.