I’m always suggesting to my students and friends to use a foam roller. I even gave away my original one to my aunt. Its insanely cheap, especially when compared to visits to a massage therapist or chiropractor and you can use it any time you want to. I usually use it for my spine and hip/pelvis area, but you can expand the range of use of it to other areas as well.
At one point I was thinking of writing up an article about how to use it and why, but here’s a pretty good one I found recently. Check it out!