Ipads are great i find, however you pay for this!
You can pick up tablets off all sizes from the web from £40..
I bought a £40 and to be honest it sucks, however if you dont want to spend much money then you can grab a simple one to watch streaming software.
things to watch out for...
1. Battery, a lot of the cheaper ones only last 2-3 hours when playing videos.
2. OS, Andriod is best, go for ice cream sandwhich 4.0 to 4.2 i think. Stay away from the ones offering 2.2, a lot of apps wont work and you will have to find a work around for flash which you will need for iplayer.
3. Screen resolution, The more the better obviously!
4. HDMI output, you can then plug it into your flatscreen.
5. Beware the ebay cheapos, ideally go into a store and play with one.
The one i bought does not like being on charge and using the screen, it goes nuts!