I did a home treatment, using different textures and also different temperatures. Ice is bad for CRPS but a cloth that has been in the refrigerator is not cold enough to hurt you. Doing it yourself allows a gentle progression. You can get creative about what you use. I used nylon bristle brushes of various degrees of stiffness. A massage therapist told me there is something about brushing the skin that activates the parasympathetic system. I don't know if this is true but it sounds like a good thing.

For me walking in grass was nice because of the different degrees of crackle and warmth depending on sun or shade. If you have access to any outdoor areas with sand and water you could build in some recreation too. That is always helpful...

If you have to do it yourself just start out nice and easy, progress slowly and if you have any numb areas make sure you aren't inadvertently hurting the skin.