Make a cheap rollmat
Instead of buying a rollmat, buy a cheap Lilo (generally for use in the pool) and take it with you camping. It's much better than just a roll mat, and cheaper than a self inflating roll mat.
Other Camping Tips
• Cold beers without a fridge• Drying Clothes
• Easy camping fridge
• Get rid of ticks
• Keep camping stove in place
• Keep pots clean on a camping stove
• Keep shoes dry while camping
• Keep soap clean when camping
• Keep toilet paper dry while camping
• Make a cheap rollmat
• Moisture control in stored caravans
• Save on camping washing up
• Sleep better when camping
• Wind break pole protectors