You should do to the probes what was done with the tokens coins, in hellbrain's games make them shortly flash in the area so the player know where to head
There are a few probes that do that actually! Most of the probes that aren't out in the open (the ones hiding in boxes, holes, crates, etc) have their lights blinking. They're dimmed out a bit so it's not super easy to spot, though, so I might make them a little brighter for the next update.
