Tig welding is great way to essentially meditate, similar to painting, once you figure it out that is. Start with lines on 1/4" steel flat bars.
I don't have a particular need for a TIG welder, but I bought it so I suppose I should find something useful to do with it. Problem is, I'm more of a woodworker.
The goal for mig is to hot glue some metal together. My friend does woodworking and loves making legs out of rebar/etc with the mig welder.
Still, I'll give it a go. My son wants to build a "mecha arm" with all sorts of spy features. This might be a good excuse to learn how to use it.