i always hate having to take dishes to people... not that i mind giving them food, but i feel like everyone always has the same 3 ideas - lasagna, chili, and enchiladas. if you aren't one of the first 3, you have to get super creative, which i am not. *lol*
for freezer meals, I always look to the freezer section of the grocery store for inspiration - stuffed peppers, pasta alfredo bake, panko crusted chicken breasts (coat raw chicken breasts and freeze, then they're ready to pop in the oven and bake as is... my kids LOVE them). i have also been known many a time to pre-assemble homemade pizzas (usually using store-bought crusts, like bobolis), and them freeze the pizzas. that way they're like a frozen pizza you would buy at the store, and all you have to do is pop them in the oven.
i know i'm way too late for your party, but thought i'd share my ideas anyway.