Obsolete Nevada Chips (my favorite)
Most other Casino Chips
Jetons (I wish I had more of these)
Casino napkins
Casino Matchbooks (front strikers) however I have quite a few rear strikers
Swizzle Sticks
Dice
Casino Ashtrays
I have several hundred different slot cards but dont actively buy or trade very often
I have several hundred different room keys but dont actively collect or trade these much either
Casino freebees (pens, slot flags, keys rings, ect.)

Well, seems like I collect most anything a casino has in them.... Hummm, no wonder I have several boxes of all this stuff!