Here are the devices in general rotation:
From the top:
1. TP Roller (formerly Trigger Pin, but they changed the name). This is my most critical piece of equipment. Excellent for general upper back and mid-back maintenance, glutes and piriformis. Very good for quads. Standing on it is good for the plantar fascia. If I only had one thing, this would be it.
2. Is a newer version of the TP roller, which I bought when I thought I had broken the other one, but I fixed it, and now I have two.
3. The reliable, cheap and really effective lacrosse ball. Good when I get a spasm along the scapula, really good at glute and piriformis work. Good for plantar fascia. Killer on the hamstrings if seated on a bench or chair, but can't get the leverage for it if laying on my back.
4. Roll spring-loaded roller device. Gail had one and it seemed pretty good, so I got one too. Good on quads, hamstrings, ITB, adductors. Pretty good on calves, but one has to be careful not to abuse the shin. Can use it in a lot of places I wouldn't have thought it would work.
5. TRX rocker. Really good on the hips, pretty good on hamstrings and quads. Actually better on the hamstrings than the TP Roller, because I can get a little more leverage on it. Probably the best thing for the calves, again because of leverage.
6. 5" massage ball. Not "The Orb", but the same idea. This came from TP, too. Kind of forgot I had this, but now I see that it is just the thing for my recalcitrant hamstrings. I'm finding that the tight and sore spots it is finding are lower down and more to the outside than the pain sensation I get walking or running.
7. Knobby foam roller. Nice enough, but doesn't do anything the other things don't do better, so doesn't get a lot of play.