Play Bunco, Yatzee, Farkle, Pass the Pigs, or LCR (get all at Target in the cards/game department).
A White Elephant, post-Christmas gift exchange is fun. People wrap and exchange the weirdest Christmas gift or something from around the house and dump it on someone else for a hoot! You'll be amazed at the weird stuff people got for Christmas!
Once I hosted a girl-friend party and my husband surprised my friends and I with a massage therapist who had one of those Swedish massage chairs (like the one's you see at the mall) and everyone got half an hour in the chair while the rest of us played games, ate snacks and talked. It was fabulous! Sorry, I don't know how much it costs, but I do know he found the person through a local college/school for massage therapy.