Another poster had a great idea IMO - give characters a pocket dimension artifact or spell that is used for camp. That way it makes sense that the camp always looks the same, and you can do more dramatic stuff with what it looks like. Characters have their own rooms or sections of the camp which reflects their personality, your personal blacksmith imp, furniture, art, trophies, etc.)
Oooh, I love it. There's a spell that makes a mansion like that but it's rather high level. I'm sure Gale could find a way to do this for us. If he can turn himself into a magic bomb, surely he can whip up a little pocket dimension.