Ok here is what I said on it. Use Velcro straps to keep the cards neat and tidy on your speaker stands. This way you can keep the tied to the back of the stand and primarily out of sight. Lighting is a similar animal but can be more difficult. Are you using a tripod or a truss for your lights?
Ok I would use get 2 dimmers and hang thme from your stands and plug your lights in those. This way less extentsion cords. Don't foget the dimmer controller though. AMDJ had some nice ones had does NSI. Then use the velcro strips in the same fashion has the speaker stands. Also don't forget stage tape / gaffers tape get it and use it.
A dimmer system allows you to actually control how bright your lights are. Some will even allow you to preprogram your scenes and allow your lights to chase back and forth. This is a great option if you have lights with duty cycles where they have to be switched on and off every 10 minutes or so to cool down. Some chase controllers such as teh AMDJ TP 1201 will allow you to chase lights but, not dim. Same thing with the AMDJ co pilot. The NSI MC 7008 and ND 4600 Dimmer Pack system ( for example) will allow you to do that and dim.
I use the ADJ CoPilot and love it. Two cables and that's it. You will still need to secure the power cables from your lighting fixtures to the T-bars using velcro or tie wraps but it will eliminate all of those extension cords and give you a lot of versatility. I am slowly making the transition to intelligent lighting but still plan to use the CoPilot for some time for my effects lights until I get a DMX controller and relay pack. You can also use multiple relay packs (one for each tree) from the same controller.
Both ESC and Centerstage carry ADJ products, make sure that you check them out if you decide on the CoPilot.
You really would not want to dim them at all. I just like this capability. I have plugged effect lights in dimmers for 4 years and have never ever come close to frying one. So that is a minimal worry. Then again I don't dim my lights at all.