Playing cards today! I began collecting single or "swap cards" as they are called about 12 years ago. Most of these are from Ebay. I've never paid too much for one; some can be rather pricey depending on the age and design. Collecting these cards started my note card crafting years ago. Sometimes I would buy a lot (as in a group not a big quantity) and be stuck with a couple of cards I didn't want to save. I used them on note cards, and the rest is history.
I have a lot of dog designs (go figure, right?).
Quite a lot of cats too.
Birds and butterflies.
Advertising is a big category in playing cards.
Am calling this group miscellaneous for obvious reasons.
Winter/Christmas. These are fun to set around for Christmas decor.
Flowers are always popular designs. I'm partial to the mod 60s and 70s style.
Collecting these cards is fun. Not very expensive, easy to store, and I always find new designs.
Have a great day!