Amazon offers the Touchjet Wave Virtual Touchscreen TV System Projector for $239.99 with free shipping. That's tied with last week's mention and the lowest price we could find for this crowd-funded gadget by $60. It clips to your TV and connects via HDMI to turn your TV into a touchscreen display. It features an Android OS, and can also be controlled from your mobile device via the Touchjet app for iOS or Android.