Everywhere I go I stay on the lookout for bits and pieces that might ease the financial burden of building the 'pit. You might be surprised by just how much of the required parts can be found discarded!
Recently I've found a 19" monitor that's in perfect working condition, I've also found several dozen switches that all work. The most effort required was to remove the switches from the broken appliances they were mounted in...less the 15 minutes total. I have most of the LEDS I required, free from trashed items.
If you want a pit on the cheap, keep your eyes open. Learn to look below the surface and see what you can make out of something or it's parts.
Besides, it's good for the environment to recycle.
