Stuff We Need

- food

- water

- blankets, ponchos

- first aid

- flashlights

- heaters

- dry socks

- tables, chairs

- tarps?

- giant plastic tubs

- bales of hay!

- portable stove/hot pot

- generator

- garbage disposal (bags)

- sign making materials (hopefully rainproof)

- hats, gloves, towels

Add more ideas in the comments, below.