that counters at my banks are designed so that they NEVER EVER jam...not even once...but ive seen some crazy ass stuff pulled from the internal reject tray in those counters...here are a few examples:
1. on many occasions dollar bills...once even a $5.00 bill, the teller thot it was mine and gave it to me

(yes, i told him it wasnt mine, but he said keep it anyway).
2. ball point pen
3. 'Tums' anti-acid tablets
4. someones credit card and ID at one time.
5. a container of 0.7mm mechanical pencil lead...still FULL and ALL pieces were intact

6. small flashlight
7. bullets like mentioned above
8. on various occasions, there will be hand fulls of cigarette ashes...someone must dump their ash tray in because there is probably change in among the ashes...
9. sticks of gum
10. nails (metal nails, the ones you hammer, not on your hands haha)
11. many paper-clips
12. many various pieces of jewelry
13. keys
14. buttons galore
15. WWWWWAAAAAYYYYYYYYYYY too many foreign coins, medallions, plastic coins, tokens, bent US money, and stuck together coins to even think about!
and like i said, thats only a small fraction of what ive seen...keep it up and hh! [R.I.P. Rich Hartford]