Got me this one a few years ago from Amazon.
Didn't have the space to keep it build up permanently. So no WIP shots. I've tried a few setups with lamps but learned that I'd have to invest a lot of money to get good results. So sunlight is my friend since. The box scatters the light and as long as I keep the back of the box towards the sun I totally can avoid hard shadows. This only works outside your house, of course. A professinally lit box can lead to better results , but with my low cost setup I'm satisfied so far.
Edit: Found this and ordered it immediately. Having an illuminated floor and background was always my goal in model photography. But those setups where quite expensive. Now this is dirt cheap:
https://www.amazon.de/ST60100-faltbarer ... =fototisch