My step-brother hasd Chrones desease. So, I get a lot of sirynges from him!
I do some work with pnematic cylinders (automation) and I have rolls of tubing. One size that is perfect of retracts. $0.10 per foot, and twice the PSI than what you'd buy at teh LHS. Also, a stack of various connectors & such.. So I can terminate my various wires with proper connectors.