I probably have 15-20 $2 bills - I started collecting them as a kid after getting my first one. I can't remember ever spending one - even when desperate - because from the minute they came out I found them special. My Grandma gave me my first one in a birthday card. She died a year later right before my 8th birthday. She was the only person who I knew loved me when I was a kid.
I know you already said you'd send them out - but I hope you save for your kids... they need to know rare beautiful things.