One of the last additions to the van was a cheap, DIY awning. In the sun, an awning creates shade to keep the inside of the van cooler. In the rain, the awning allows us to leave the slider open without rain entering the van. No matter the weather, it makes an extension of our living space and a nice area for us to hang out outside.
We put together a love seat that converts into a twin bed to sleep width-wise across the van.
We put together a magnetic screen on our sliding door to keep bugs out.