you can layer it like you did the spacer/synch gen. i havent gotten around to that to make a pattern yet though :/ second best thing to use is whatever you can find at the dollar store in the tupperware dept. if its tall, you can cut it down.
the lights, if you're good with cannibalising stuff, a quick trip to the dollar store will get you a laser sword with lights and a speaker. they dont blink, but they turn on and off.
as for the odd colored tubes, are they the red, yellow and blue hoses through out the pack? for the hoses, i used electrical wire for my last pack. it doubled as my wiring for my pack too. i finagled some of the brass elbows out of electrical connectors.