I know the judges weren't convinced that Maggie's construction met the brief, and I wasn't sure either.
Even if you didn't have many toys or a favourite toy as a child, wouldn't you just make one up? Off the top of my head - a dolls' house, spinning top, jack-in-box.
I thought the snooker table was great. Really effective and possibly not too tricky. My mum made my brother a snooker table birthday cake one year.
I thought the same re: George's plane, that the motor element saved it.
Also agree about the unfunny jokes. What Matt said about Paul Hollywood possibly being George's(?) father. Totally unnecessary and insulting. Not sure how that made the cut.