Joint pain in fingers can be from arthritis, or just gripping a pen or mouse for long periods. To help relieve those aches, gently move each joint in a slow range of motion - bend, straighten, twist and side to side movements. Some positions will have less movement, others more. Always move to the level which is comfortable and no further. You can rotate and bend the finger at each joint or as a unit. Several minutes of hand work will increase the blood flow and joint fluid.

I taught a study group on hands. The review for that class is in this video, which may give you some ideas on just how much you can do to help your hands feel better!