Another giant der der

The bedroom carpet arrived today so we've been working till late. Carpet laid, curtains fitted, bedroom furniture installed, bed dismantled in old bedroom and reassembled in new bedroom. Everything installed and bed made and then a rethink. Maybe the bed would be better on the other side of the room. So mattress and bedding removed and bed lifted and spun round (fully assembled this time) and rest of furniture adjusted accordingly. It was worth it. Still, all done and we'll be waking up in a different bedroom tomorrow with a slightly different view when we open the curtains. 
That's now 5 giant der ders sitting on the garage roof trusses. Der ders? Remember when you were a kid and you got hold of the centre from a used toilet roll and ran round the house with it pressed to your lips like a cardboard megaphone shouting "Der der, der der"? Or was it just me? 
Anyway 5 giant der ders from the centre of carpet rolls sitting there in the garage amongst all the other things that might come in useful one day. Any suggestions?