I was a fan of the clear tail balls found on the prototype BN-1 units that were shown at ROBODEX, so I sought to recreate them for my latest BN-1 custom. I had loads of colours I could've picked from, but I eventually settled on pink so the aibos could chase the cat around. =>_<=
I think I will make more of these when I get more BN-1 robots to customise. I have loads of custom ideas for these robots - it's a shame they are relatively hard to get for a decent price and in working condition.