If all it is is on-line games etc... then chromebook would be the way to go... I was looking at one myself as an extra... (but the new fire HD is tempting my towards tab)
fire for $250 Today only, save $50 on Kindle Fire HD 8.9" when you use the code FIREHD89 at checkout http://www.amazon.com/dp/B008GFRE5A/ref=asc_df_B008GFRE5A2281633?smid=ATVPDKIKX0DER&tag=nextagus0000673-20&linkCode=asn&creative=395093&creativeASIN=B008GFRE5A