I was finding it a bit annoying having all the accessories for my Powrtouch mover and Al-Ko security clattering around the boot, even if some were in the bag that Al-Ko provide. I had been looking for some time for a suitable box to make a fitted case for them, and found one by chance. I've no idea what it was originally, but it was, uniquely, long enough to accommodate the two long-ish socket spanners, as well as the mover remote control and battery key, a spare 9v battery, the bolt, lock and bolt tool for the Al-Ko lock and the special adapter for the alloy wheel nuts..
After a quick measure-up, I ordered three pieces of foam from eFoam. All were cut to fit the box exactly, one main slab 36mm thick and two 7mm thick.
I stuck one of the thin bits into the bottom of the box and one into the lid, using some spray adhesive that was left behind by a carpet fitter. I then put the tools and things one by one onto the middle slab and cut round them with a sharp serrated knife. Some of the cuts (the remote control, the spare battery etc) went right through, some only part way (the two spanners). Finally I glued the rather shredded main slab into the box. It is now much more convenient to store and easier to find everything.