Complete tool list and directions at: https://www.rei.com/blog/camp/diycar...

Stay clean wherever your adventure takes you. Learn how to build your own ‘solar’ camp shower for your car.

Tools:
Hacksaw
Drill with 1/8″, 3/4″ and 3/8″ bits
Marker

Materials:
One 10′ length of 4″ Schedule 40 ABS pipe (this will depend on how much water you want the shower to hold)
Two 4″ ABS end caps
One 4″ Tjoint ABS fitting with threaded top opening
4″ ABS cleanout cap for Tjoint
One 1/2″ brass locknut
One flat rubber Oring
Two canoe foam blocks (optional: these go on your vehicle’s crossbars and keep the shower more secure and held off the bars; alternately you can just tie the shower directly to the bars)
One Schrader valve from an aluminum wheel; available at any tire/wheel shop
ABS cleaner/primer
ABS cement
Waterproof silicone sealant
Sandpaper
Tiedown straps
Petroleum jelly
Schrader bike pump
One 3/4″ hose spigot
Hose with nozzle