Do you sew? At all? I'm a hammock hanger for many years and my first hammock was made by me about 15 years ago and is still used today.
12 feet of ripstop (heck, even a bed sheet!), some good line like Spectra or AmSteel Blue, and you are in biz. If you are really poor, nylon ski rope works just great (what I used). Add a ridgeline (piece of masons string) and now you can hang a rainfly or bug net, which you can make. I think I bought all the fabric at Walmarts $2 a yard bin, everything for under $20, if that.
Back then, there were no Hennessey's or War Bonnets yet. I own a couple manufactured hammocks but as I said, I still use my homemade ones. You can make them as light as you want!

Oh, and I don't use "tree straps". Instead I wrap the suspension line around the tree a couple of wraps, to spread out the load. Secure with a couple half hitches. No carabiners, no buckles, no hardware, no straps. Never ever damaged a tree.