Picture 2 shows 3 of my methods involving screws. First, the drill - it is just hooked onto a couple of screws. This is how most of the tools are attached to the wall. Second, the drill bits - as I only have 5, it worked fine to put two screws in and place them on top. Finally, the screws themselves - as they were in the box shown, I hooked the handle on as before, but tipped it so the box itself was the right way up.
Pictures 3 and 4 show my two velcro methods. In 3, each screwdriver has a bit of velcro on one side and on the wall there are 3 equally sized bits of velcro - one each. In 4, there is a strip of one side of velcro and each screwdriver has the other side wrapped around the top of it.
There is also a strip of velcro along the bottom of the staple gun to help it stay up.
Finally, the electric screwdriver has a rubber band hooked around two of the screws to help it stay up.
I wouldn't recommend my methods, but they work well enough for me.