Stage one. Remove child and associated project from living room:
Stage two. Take over. Who pays the rent around here, anyway?
Ingredients: 4 Quad ESL-57s; various bits of 4×2 and other lumber out of local skips (generally a higher standard than cut timber from a certain UK hardware chain); a couple of metres of extra speaker cable and a total of 8 banana plugs; several metres of mains cable and a total of 4 bulgin plugs; 8 castors capable of bearing at least 15kg each; lots and lots of screws. Toolbox.