Snag Repair Tool by Sew Mate contains two different sizes of handy little snag repair tools, a larger and a smaller one depending upon the weave of the fabric with which you are working.

Poke through from the front to capture the snag or thread, put through to the back and rearrange the fibers to cover the hole. Each has a special knurled tips which lock on to the loose thread and enables you to draw it back through the fabric. Works great for tucking very short ends of thread under your completed needlework.