Walmart offers the Ematic Low-Profile Universal TV Wall Mount bundled with a 6-foot HDMI Cable for $8.98. Choose in-store pickup to dodge the $5.99 shipping fee. That's the lowest price we could find by $9, although we saw it for a buck less in last month's mention. It supports HDTVs from 19" to 60" with a maximum weight capacity of 77 lbs.
You very likely are putting your laptop battery into an early grave.