twins on the move - how to stop them destroying DD1's treasures

[toomuchpink]

It has been tricky enough with one baby bottom shuffling. Every building, every jigsaw, every scene DD1 creates is in danger of being destroyed by mobile twin. All tiny toys have become a health hazard. Today sedentary twin began to set off on her bum.
DD1, aged 3, is used to playing in the room with us and I can't imagine banishing her to another room every time she wants to play with something the babies can't have.
Is the only way forward to divide our living-room in two? It seems like a weird way to live. I would love to hear how other people have managed this problem.

DS1 played with things on tables, window sills but he was a bit older, plus he would go upstairs to play also. Its a nightmare, lego especially. I'm not sure I ever suceeded that well. I'm interested in other peoples suggestions.

Don't have twins but got a nutter crawling 9 month old and a nutter older not-quite-three toddler who is fiercely protective of his stuff. He is quite happy to give her her own toys but any sniff of her attacking his own stash, and all hell breaks loose. I suppose, apart from the teary baby, it's an advantage as anything small gets ripped out of her sticky mitts before she has chance to put it in her mouth.
I do feel for him though as his favourite things- making huge brio tracks, lining up cars on his rug and duplo building- all get annihilated in seconds when baby thunder thighs galumphs into the room. We dont have enough space to separate them into two different play areas.

I made dd1 a den with cardboard boxes to protect her things, she plays trains on the coffee table but dtd2 can now reach that, dtds have a play pen and sometimes dd1 plays in her room. We pulled the sofa out for the den so dd1 didn't have much space but it was enough.

there is 2.8 years between my DD and the twins. She did not like them for the first year and just refered to them as ' the brothers'

we bought her a high sleeper bed so she could get up out the way of the twins... then caved and got her a stairgate for her room (we live in 2 bed flat so easy for twins to wnader into her room)... and spent an afternoon trying to train her to open it ;)

Twins are now 3 1/2 and DD is 6 she does somtimes play with them . . . . .