A climbing wall for a kids bedroom. Up until now the twins have shared a bedroom. They've been more than happy with this arrangement, but now they've started school (in separate classes) and we've been encouraging their independence .
IKEA Hackers: BESTÅ turns into play-centre. -Shallow cabinets, might be better with deep Besta. Not too low, need to allow desk height change as kids grow.
Ikea Hack children's cabin bed step-by-step photo tutorial : How to make a children's cabin bed (with hidden den) on a budget using Ikea Nordli drawers.