Flypaper

Flypaper was paper coated with a sticky, sometimes poisonous substance used to catch flies.

In 2266, Spock suggested that Balok's cube might be either a marker buoy or "flypaper." 

When the USS Enterprise (NCC-1701) was held by Vaal's tractor beam in 2267, Montgomery Scott described the situation as being like a fly caught on flypaper.