I leave the slick cover in place over the double-sided sticky tape, use it, then put it away like Dave. I did have a cheap commercial version with a built-in 5 VDC logic supply, some switches, an oscillator, etc. like Dave showed in his picture, but I left it at work when I retired because it had an active circuit on it that controlled the on/off operation of the particle accelerator beam. It was convenient to have it at home, but I didn't want to leave them without an operating accelerator... just in case. So now I just drag out whatever power supplies, signal generators, switches and so on that I need when playing at home.