Politics aside, the hammer and sickle are a pretty clever representation of workers. hammer for factory workers and sickle for land workers : r/vexillology
2 x 10cm Hammer and Sickle Vinyl Decal Sticker Communist Laptop Car Star #5544 | eBay
Hammer & Sickle - Download Free 3D model by anzolin.marcel (@anzolin.marcel) [e1e523a]
File:Hammer and sickle over Pripyat.jpg - Wikimedia Commons