[Berlin] A walk in the park last weekend and I came across these fellows. Four bins in a cluster, two by two…. hmm..what does one make of that?

Five minutes later - same thing, but now two of those are hooded. Bright primary colour hoods with funny shaped holes in…

Is this some sort of colour recognition game, I thought, where kids have to match small coloured objects to small coloured boxes. ..Is the yellow bin perhaps only for those yellow objects we throw out … lemons or bananas?
…And then later, sure enough, I came across another group. I stood infront of them for a while and I tried to work out in what they were trying to say…

.. Is the blue one with the letter box for letters?… or is it blue for water bottles…is the brown for our beloved four legged friends… or is it for beer bottles…mmm… the quest for meaning continues.