One easy thing to do is move around the house more. I don't sit in any one place more than 15minutes today. I get up and walk around, go online, watch a little TV, play with the cats, pick up stuff, move stuff around, etc.

Also while lying in bed I do the isometric exercises for my legs and feet that I learned in PT years ago. This moves the lymph around and the blood and keeps the legs and feet from suffering.
Do butt crunches in bed and kegel's too. This has been really helpful for me since I retired. I also try to lie down once during the day for at least 1/2 hour, to help with circulation. I don't always nap, sometimes I just read something. (we only have one TV and that is in the downstairs living room).