most people just use pipe for large spools, small rods for small spools.. and hang them up, either on the wall or on the desktop (for solder).
You can get commercial solder holders, and you can make a cheap one by bending a coat hanger into a self-supporting spool holder for your workbench.
I've seen people use coat hangers for a soldering iron holder too.
I personally use an old can of Corinthians Vanilla Cream Wafers with a hole punched through the lid, and the solder inside. It stays put on the desk, and can be a third hand sometimes too. Plus, the wafers were yummy

