Just some ideas, you can get construction paper and make cards. Be creative with stickers and such for scrapbooking found in the crafts department of Wal-Mart stores. They some pretty cool stuff and it will get your heads fluttering with ideas!
Be creatvie with photos of the guys from a young age to adult hood. I think it would mean something more if the cards were hand made.
It will show that you not only care about their sons but about the family as well.
