Double sided Velcro is cheap as chips (Help!, I'm turning into an antiques dealer

) at about £1 a metre, which you can cut down into about 6~8 strips, and this makes great re-usable cable ties.
I've gone for white velcro, as I'm using it on silver/grey bars/poles, and the black velcro would stand out too much against silver/grey - besides, the muckier the white velcro gets, the closer to silver/grey it becomes
I use a switch box like the one you describe - it has a box of 8 IEC sockets which mounts up on the overhead rig, which has one power lead and one data lead going to it. Down on the ground, theres a control box which allows me to switch on/off any of the 8 IEC sockets above. I can also set the left 4 switchs, and the right for switches on "Timer", which is adjustable from 16secs to 15 minutes. The unit flip-flops between the left 4, and the right 4 switches according to the timer settings for each side of the unit. You have full on/off control of any/all 8 switches regardless of what the timers are doing.
When I bought the unit, it was made by Lytequest/Gemini. The designs are now used by Chauvet in their product range (re-badged, and a slightly better featured control panel).
Great unit.