J.G.
I planned a surprise party for my husbands birthday a couple years ago and it was one of his favorite birthdays. I arranged to have one of his friends over early that day and he took my husband to a couple stores with him to help him (his friend) look for something he was considering buying...well this was just a stall to be able to get the rest of his friends and family at our house and get the house decorated, I had everyone park away from our house so he had no idea anyone was here when he got back. He was so surprised and he loved it!! We played games (he's a big xbox fan) and I just let him do whatever he wanted that day while I took care of our son. So we just had games and food all day. Maybe you could do something like that if your husband is a games, fun person. =) Hope that helps alittle. Good luck!