Standoffs elevate a circuit board for wiring project, but you'll pay a premium at the local computer shop for a few, or have to order them in unnecessary bulk over the web. Use nylon tubing as a cheap, convenient stand-in.
Nylon water tubing, the kind used for refrigerator water lines and the like, is non-conductive and just the right size to allow a board screw to pass through the chassis below. You can purchase a length really cheaply at most hardware stores and makes dozens of standoffs from it. The image above shows regular metal standoffs on the top and the nylon-tube standoffs at the bottom, for a comparison.
Have a cheap DIY trick of your own to share? Let's hear it in the comments below.