SUNUV Nail Lamp
I looked at a variety of high- and low-end UV lamps, and this seemed to give customers the most bang for their buck. The SUNUV Nail Lamp ($24) has a solid 4.5-star rating, and it's super easy to use. You can either turn it on indefinitely or hit the buttons for 30- or 60-second intervals. You can put it on any surface, even your lap.