Winter B-day Party Conundrum

So, I totally need to make up for throwing a lack luster first birthday for Cash. Last year I got so busy that his birthday crept up and left little time for all the frills it deserved. The problem is that his birthday is in the dead of winter, and it's too cold to do anything fun. An outdoor party is out of the question. A party at my house is doable, but limiting. For one thing, it's not huge. If it's snowing, people might have a difficult time getting to my house. If it's really cold, we can't take advantage of the back deck, which is the only thing that makes my house party worthy. I could have a sledding party, but with my luck it won't snow enough. I'm looking into places like Jump Zone but they are pretty pricey. Plus, I don't want some company dictating how our party will proceed. I've done that before at two of Kamden's prior parties (John's Incredible Pizza AND Dave and Buster's) Both were pretty much expensive disasters.

I'm getting a jump on it this year and researching fun winter themed parties. Here are some ideas I'm thinking about ripping off from other people:

Penguin Olives...so cute.
Hot Cocoa Bar
Marshmallow Snow Man

Mmmmm.... Penguin cupcake (what are the chances I will be able to re-create those?? Slim to nada!)
Serve some yummy soup.
This obviously would say, Happy Birrrrrrrrrrthday Cash!