Lovin your photo Littlemo!!!
Achy muscles ... ever hear of Biofreeze? It helped my Mom's discomfort. Bought it through Amazon and applied generously.
Also (sounds goofy but i am quite serious) I ordered full leg ice packs used for racing horses. Regular ice packs just were not cutting it on the comfort scale. My Mom's entire legs or arms would flare in pain, from skin to joint discomfort during her Temodar/Avastin timeline. So we extened the velcro on the ice packs for the horse legs to fit human legs. They were lifesavers for her.
When the pain kept increasing from there, Fentanyl patches came into play and were the best for her at that time.
There are many who never/rarely experience the muscle/joint/skin pain from treatments. And then there are those, like my Mom, who went off the scale in discomfort. Took alot of trial and error. Everyone is so different and comfort becomes very personal as to what helps and doesn't. Hoping what is shared above may help in some way.
Thinking of YOU!