We are inviting a few friends over for my son's first non-family birthday party in October (he's turning 3). What are some simple indoor activities we could do at the party? The weather in October in Seattle is not reliable enough to plan anything outdoors (it will probably be raining) - otherwise I would have done a bounce house. And our house is pretty small. My daughter's birthday is in June and it's so much easier to do birthday parties where the kids can also run around outside! Any ideas? Thank you!!