So much to id.. but I think we need an "ordered pic"
From the top of my head...
Top right are things from the OR tables - bases for the operating table and lights.
And the grey thing under then (and another more to the left) are parts of dish antennas.
Are those 8 small "vertical rectangles" the curtains from the system X house? I'm missing those! But I'm not sure - still not familiar with the darn thing.
Black thing with yellow wheels under the pink petals is part of a... those things to lift the cars? Like on the car shop, pit stops.
Wood boards are sides of a wagon (like the hay cart).
Yellow ramp over it from a skateboard thingamajig - you know, sort of a bench with two ramps, to do tricks on.. (and possible end up on the OR - all related, see?
)
There's the roman standard (duh, right?)
The triangular bits are with the "rope" - I think there is one there, made to secure it... somehow.
And the bunch of brown things in the bottom are used to hang standards on the castle walls (the topmost one has the part that actually goes on the wall too). They are missing the part with pegs to secure the "flag" to these parts.
Flat grey part next is used under tractor trailers and such, to make them tip. And right next to it there's a white cover from the (victorian?) pram. Actually, I think the white thing under the boards is the mattress for the pram.
Bottom right, the blue square is part of a roman weapon, and the black bit goes into a steck wall (like the torch holders) to attach.. well.. whatever you like.