See that little greenish device? It's a level, and you'll be glad to have one when it comes to getting your trailer situated for a good night's sleep. Keep it handy, where you know you can easily find it when it comes time to unhook and get situated.
The blackboard may seem a little less obvious in terms of usefulness. But once you've been on a Girl Camping outing or two, you'll see where it comes in handy for leaving notes, recording numbers, creating signage, writing a needs-list, or putting up a few pithy words.
Just don't forget the chalk!
