Available separately and as part of the tent, this is the main protection between you and the ground. Groundsheets should be waterproof and seam-sealed. If it is stitched to the inner tent, it should be of 'bucket' or 'bathtub' design with sides of at least 10cm.
Most tents come with simple steel pegs that are hooked at one end. But depending on the weather conditions, and the type of ground, you may want to consider other options. You'll need to balance the requirements for minimal weight and bulk, with the need to hold down your tent in extreme conditions.
Steel pegs - the strongest and heaviest peg for their size. Hardened steel pegs are useful for stony ground. Pegs pressed from sheet steel provide better hold than thin steel pins - but watch out for sharp edges when removing them from the earth.
Plastic pegs - lightweight and cheap, these have a large cross section for greater resistance to strong wind. Avoid cheap versions that can snap easily.
Alloy pegs - lightweight, but can bend easily in hard ground or with a clumsy mallet.
Titanium pegs - usually expensive, these are ultra-lightweight and durable.
Screw pegs - come in plastic and steel, and are screwed into the ground using a small hand drill. They provide excellent grip in soft ground and are useful in high winds or stormy conditions.
Biodegradable pegs - these reusable pegs will break down if accidentally left in the soil. Made from materials like wheat and potatoes, they're ideal if you're really eco-conscious.
Sleeping bags - probably the most important factor in getting a good night's sleep, there's a huge choice available for every need and season.