My son just got the same graduation card today from two sets of relatives in different parts of the country (unfortunately not GCU, but produced by our local Kansas City card company).  It was a cash/check enclosure card.  Although I haven't advertised my cards to these relatives yet, it did make me think about why these particular cards were chosen. The card was brightly colored, very simple and mentioned that money was in the enclosure.  It would be great if there was a special "Money Enclosed" sub-category for graduation and wedding cards.  Many people buy cards that mention money to "start your future" or "Help you on your way" or something like that.  Checks or cash fit very nicely in the GCU 5 by 7 cards, even though there isn't a money flap.  I think they'd be very popular. In my pre-GCU days I bought or hand-made quite a few cash enclosure cards!