The MaxBotix low voltage MB1010 LV-MaxSonar-EZ1 offers very short to long-range detection and ranging, in an incredibly small package with ultra low power consumption. The MaxSonar-EZ1 detects objects from 0" to 254".
The URG-04LX-UG01 is a laser range-finder (LiDAR) that's inexpensive, accurate and easy to use. This laser utilizes a USB 2.0 interface. The field-of-view for this detector is 240 degrees. Distances are reported from 20mm to 5.6 meters.