Quick cartboard softbox

I needed a softbox for some photos yesterday and converted this cardboard box into a softbox. The inside is covered with aluminum foil and then I taped some thin white paper in the front. The box is held on the flash with some tape as seen on the first photo. I also made a little removable grid from black thick paper so it wouldn"t spill the light everywhere. I think I'll paint the brown parts black next so it will look a bit nicer.