Here is a folding exercise bike with a desktop that lets you work and exercise at home. The Exerpeutic Workfit 1000 Desk Station is easy to get on and off. The desktop is 16″ wide and 24″ long, so it can support your tablet and other gadgets. The desktop can be adjusted to 3 positions.
The bike comes with 8 levels of magnetic resistance. You can raise or lower the desk to fit your needs. The above video shows what you get.