"Giving" a play room makeover as main present

[drspouse]

Now the DCs are more into games, active play (one has SEN and some sensory needs), and Lego than small world play, we are doing a makeover of the play room. We are going to get a climbing wall, swings, and a build-yourself-sofa.
I would love to have this be the DCs' Christmas present (along with some smaller stuff). Has anyone done this? How have you wangled it? They are 9 and 7 and unlikely to be going to bed early, for a start!
They are reasonably easy to fool/hide things from so we could potentially keep all the bits in separate bits of the house away from them e.g. the build-yourself-sofa could possibly fit in the attic (but then what do we do with the existing sofa...)

When I was 8 my Christmas present was a trapeze, swing and pull up rings. My dad put them up in the barn after I'd unwrapped them
One of the best presents I ever had, we played with them for YEARS.
Your children are so lucky

[quote drspouse]Only stockings come from FC so that's not a problem.
The sofa is this
www.etsy.com/uk/listing/1065526451/activity-play-mattress-set-foam-mattress[/quote]
What is Montessori about the sofa?

Fwiw I'm autistic, although back in those days I wasn't diagnosed and no one had heard of sensory needs. But it helped with mine so much.

What is Montessori about the sofa?
I have no idea but they keep taking the current sofa apart so it has to be better than that!

Oooh I think this is a great idea!