My son's first birthday is coming up in just a month, and I am working on his party. Unfortunately we have about 50 adults on the guest list, expecting around 35, and around 20 kids, most in the 0-3 age range! I was wondering if anyone has activity ideas? We are in Colorado, so being outside is unlikely to be a possibility, and I want to keep from making everyone wander aimlessly between the two large entertaining areas in my house where I hope to corral the guests

Here are a couple of my thoughts:
-photo booth
-Wii (I guess mostly for the adults and a couple of older kids)
-some sort of game?
-guest book for people to sign and maybe write a message to DS? I hate writing messages to babies at showers/parties though.
-some sort of craft that the toddlers might like, or that at least the parents could get a laugh out of?

The theme I picked out is Winter "One"derland.

I would love any advice at all about the party, and I know there are a few other bees with upcoming first birthday parties to plan! Thanks!