The easiest way to make metal (or angle) rods is to cut them out of a coat hanger.  Get a parent to help you use a wire hanger to cut them as shown below.

Making rods

Straigten out the handle until you have a right angle.  You’ve got your metal rods!

SAFETY FIRST

Tape up the ends of your rods so they’re not sharp.  And don’t use them near other people — you don’t want to poke anybody’s eyes by accident!

Diagrams of rods by permission of Tom Graves