Thank Yous Question

If you are not supposed to write Thank You on the front and you do not want to use thank you with pic - what do you put on front of card. Monogram? We already have informals with our first names on them for shower and engagement gifts. Any suggestions?

I think monograms are most popular but I think a decorative border or a simple design on the front would work nicely also.

ETA- we had our names on the front of our cards.