Need modeler = SOLVED , thanks to The Chaser!

[daortir]

I cannot help you with the streetsigns or the street pillar, but about the tools, I think you could use some stretched Amnesia models :
you can get a boltcutter by stretching the pincers entity (i tried it and I think it looks pretty great), the picklock tool i harder, but I think you could manage something like it by stretching in different ways the dissect_knife or the chipper. And there is a chizel as well ^^

If you want to make them as pickable items, you can just set an interact callback that gives you the item, and create a slight pointlight around them that fades when the item is picked. Or you can make them pickable items by changing the models though I have no idea how to do it.