The two weird things I can think of off the top of my head are 1) my Eagle Scout card and 2) a card with a periodic table on one side and a bunch of scientific constants on the other (the Chemistry Dept. at Virginia Tech gives them out sometimes).
My son said I had a “cheese stick” in my purse. It was a tampon. 
Beside the usual stuff people carry, I have the following:
Bicycle playing card Queen of Hearts that I found in the parking lot at work in 1996
The letter F (value 4pts) from the game Scrabble
Three DumDums, Lemon, Grape and Mystery Flavors
Bottle of Blue Nail Varnish
Silver Toe ring (can’t wear them with my riding boots)
Hoof pick (for horses’ hooves)
Receipts from the following:[ul]
[li]Harrods[/li][li]Harvey Nichols[/li][li]Boots the Chemist[/li][li]SuperDrug (New Strand branch)[/li][li]London Zoo gift shop[/li][li]The Seashell[/li][li]The Orangery at Kensington Palace[/li][/ul]
Mind you, I haven’t been to England in nearly two years.
BWAHAHHAHAHHA!!! Good thing he didn’t want a snack!
Gotcha beat. I counted last night, because I couldn’t comfortably close my wallet. I have 97 fortune cookie fortunes in my wallet.
I left them in, and took out all the old receipts instead. 
My membership card from my high school chapter of the Thespian Society.
My membership card from the 1978 World Science Fiction Convention (Iguanacon) in Phoenix.
A ticket stub from the Freedom Train, dated Friday, January 23, 1976 (my 16th birthday).
Came across another strange one in my purse this morning. I have a spare cel phone battery to a kind of cel phone no one in the family has anymore. I switched several months ago and son switched last month.
My license to marry.
I haven’t really managed to clean out my purse since the Origins game expo, so I have:
A commemorative Origins 6-sided die.
A wooden nickle that says “Cheese Weasel Logistics, LLC” on it.
A Fluxx promo card, “To Sleep or Not to Sleep,” which is now so battered that it’s unplayable.
The only thing “odd” I have is a folded post-it note that has my NASCAR fantasy team on it and my buddy’s NASCAR fantasy team – that’s in case I don’t get online again before Sunday, I’ll be able to follow our drivers for the race.
Which I won’t even get to watch because it’s on F/X or TNT (can’t remember, don’t care, because I don’t get either one).
A copy of the periodic table and a length of twine.
I have a new one, obtained as change at a gas station yesterday…a dollar bill on which is stamped, in red letters,
“SAVE AMERICA
REPORT & DEPORT
ALL ILLEGAL ALIENS”
Heck, I haven’t been to England in 19 years and I still have a bottle from Boots the Chemist with a ‘distilled water’ label on it (it’s not in my purse, so I guess this is a bit of a hijack…sorry!). I first got contact lenses in England, and was told to use distilled water with them. This was my first bottle of such – now empty, of course – but mostly I’ve kept it for the Boots part on the label (one of my keepsakes/memories of England).
A round, orange sticker that reads “Bone Island Trolly” good for all day rides on the trolley in Key West. Hmm, that one is 4 yrs old. Time to stick it on someone.
A business card for the CenterHotel Skjaldbreid in Reykjavik, Iceland. Usually I carry a hotel card when I am travelling, so I can show a cabbie where I need to go. This one now serves to remind me of a wonderful serviceman in Iceland who found my wallet, saw this card, and travelled across town on New Year’s day, to return it to me.
I my wallet are several Dave Dravecky baseball cards, both before and after his cancer surgeries to remind me to show some courage occasionally. I’m not even a baseball fan.
The oddest thing I have in my wallet is an old and extremely expired Costco membership card because the picture on the back is the best one I have from when my hair was ridiculously long and curly.
I used to carry around a small list of the ten commandments with checkmarks indicating which ones I’d broken. 
It’s terribly irreverent of me, but that’s funny.
Apart from all the usual stuff, I carry a list of what it will cost me to speed/run a red light etc. if I get caught. I look at it every once in a while to determine how much I can speed w/o going completely broke
Mine is really kind of pathetic compared to most everybody else’s. I guess the highlights would be my International Association of Turtles membership card (dated 1968) and a semi-ancient clipping that debunks the popular version of a minor incident in Chicago’s history.
I carry two wallets.
1 has a badge and ID and $100.00 Jamaican plus a credit card.
2 has a National Fire Academy Alumni Assn membership card, An Illinois State Police, Organized Criminal Groups (gang) ID sheet, and a St. Michael coin from the gift shop of St. Francis Monastery in Kennebunk,Maine, and an Atari sticker, yet to be stuck.