I have essential tremor in my hands, left hand is worse than right. I don't dare carry a glass or cup of liquid in my L, ok in the R. Normally I use a tray if I'm carrying two or more itens. Writing a check - I'm R handed - is very hard. I'm working with a hand physical therapist who has devised a heavy pen for me to use. How to make a pen heavy? She taped a large heavy bolt to it, the bolt being about 3 inches long and maybe 3/8 inch dia. It makes it much easier to control my hand movements. Now I need to get myself to the hardware store to get a bolt. The therapist has also given me exercises to increase the strength of muscles in my hands that control much of the movement.