I wanted curtains that allowed no light in and no light out. This would allow be to park up and no-one would know I was in the van.
I bought some black material. My dad help me measure and fit some thick black curtains, 2 for the back windows, and 2 for the bulkhead.
The curtains where held up with net curtain wire. I also sowed Velcro into the sides of the curtains which allowed them to be stuck to the carpet on the walls, stopping the light leaking out. My dad made some tie backs which are very useful.