One of the best ways to avoid messy tent hell is to set up an organisation system and stick to it.
Left hand side for sleeping, back right corner for clothes, front right corner for food, torches and bits a bobs.
Valuables? Keep them at the back near to you.
It doesn’t exactly sound like the free spirited wild lifestyle your looking for, but when you’re not waking up with his smelly socks near your pillow in the morning, you’ll be glad you thought it through.