- Collapsible cups for the kids (can buy at Target or camping supplies stores). I make each of them a different color.
- Many, many, many more socks than you think you'll need for the kids. Dry socks are a must.
- Rain boots. Then if it rains, the next day is fun for them - not a muddy disaster.
- I bring 3 sets of shoes for the kids: rain boots, easy on/off shoes for outside the tent, and tennis shoes or hiking shoes for walks. For adults, we just omit the rain boots - although I think I want some too. :)
Hope that helps!