I don't think they would need any toys if you let hem go out , they will find far more interesting things than toys.
Leg bands are fairly cheap so I don't see point of making them.
As for a swings, mine don't like it at all. You can make a very simple swing by taking piece of thicker stick, tie a rope on both sides,
make a loop on the other end and attach it to the hooks in the roof of a run or outside on a tree branch. I made one like that for them last year , they never used it.
There are a couple of threads etc on chicken toys here: https://www.backyardchickens.com/newsearch?search=chicken+toys Look on the left for the "Articles" link. Anything food related will amuse them endlessly, if they are cooped up or confined to a run all day, it doesn't to have something for them to peck at.