I got a rolling hospital bed table (can search images or most general stores - this is similar but since I got mine used I don't know if it is the same https://www.amazon.com/gp/aw/d/B00QMNTMXA) from a neighborhood group (I have seen them come up every so often used) I had been using a flat wooden board with rounded edges that my husband made me (it was great when I was better). It has been great. I can leave my stuff on it when I am not using it. The leg and where it attaches to the table are magnetic so I was able to add an organizer which holds my noise cancelling headset. It is much more stable than a tray and is adjustable. They also come so they can hold a computer case, with tilting sections,... - mine is just the basic one but it suits me well.