"I can absolutely build the Billy Bookshelf faster than you, HALF brother, and I can build it BETTER"

I'm sort of frightened by what they could come up with for model train collections

wheeze a full on building full of models?

tokyo metro replica?

but BETTER (and bigger, and more complicated)

bitweaver: it is four levels and solar powered

absolutely, 0 carbon emissions, or better negative carbon emissions

feanor in a fit of pique incorporates silima for some of his structures so they glow

if you thought the war over magic jewels was dumb, here comes the war of the toy trains

could be worse. Could be dominos!

or a slinky

..............you know I feel they would enjoy the thought that goes into rube goldberg machines

who can design the most outrageous one? and feanors takes like a month to finish and stretches over three football fields and ends with a pen writing a single letter or something