I'd quite like the bundle of hoses and shower cable taped together...
and the wonderflex shoulderpads (if only to improve them for you...)
and possibly some of the box of 'stuff you're not sure about getting rid of' (probably the acrylic sheets and plastic rods and tiny mirror sheet....although I don't think that stuff and the aluminium takes up *that* much room, and it's cool shit, so you may not really want to get rid of it...)
the random bits of clear and white rubber tube...