Room Lightweight

Does anyone know of a lightweight exercise machine (like a stationary bike) that I use in my room?

I am looking for a stationary bike or something light like that can easily store and get a workout while watching TV or reading in my room. It may be cheaper and without the characteristics Additional - I just want to do some cardiovascular activity while watching TV (in addition to abdominal and push-ups). Any ideas?

Coaches elliptical are great for small spaces, I bought one new for about $ 100 and have a very small room. Plus they are little or no impact to not to ruin their knees due to impact as it would on a treadmill. Most of them can be folded down to put in closets or other small spaces and are therefore general economic rather unlike stationary bikes and treadmills.

Room Lightweight

Room Lightweight