I have a roccat lapboard that I use for gaming from the sofa but when not on my lap it always seems to need moving out the way. So I quickly designed and printed a couple of brackets that clip to my desk so it isn't underfoot when not in use. This design is pretty specific to my requirements but I thought someone might make use of it or be able to adapt it to their needs.

If you print it on it's side you should be able to get away without supports. However if you don't get good bridging on your printer you might need some on the one overhang.