An ultralight gear item which I've been trying out is the Hennessey Tent Hammock. Part tent, part mosquito mesh, part hammock, the thing is pure genius and a pleasure to use -- very light, ingeniously designed, and actually provides a comfortable backcountry sleep. Perfect for wet areas. You do have to worry a bit more about insulation under yourself, but not a big minus especially given the comfort of the shelter.

-- Rex Ishibashi

Hennessy Hammock is a brilliant fine-tuning of the hammock concept into a tent substitute. It means I never have to sleep on the ground again! Being asymmetrical it allows me to lie relatively flat for a very comfortable night's sleep. There is a large rain-fly that cocoons around the hammock in cooler weather, a fine insect/dust mesh enclosure, and an entrance that my weight closes behind me. You can even set it up on the ground like a bivvy-bag if there are no trees (or lamp posts, or bumper bars). Great for tropical camping.

-- Toby Gibson

Hennessy Tent Hammock
$79 (basic model)