I fear that a number of your suggestions are not valid.
Anything duplicating or used as a weapon would count as improvised even if allowable
I do not interpret the Anytool as separating into multiple items, so I would not think it could substitute for marbles, caltrops, stilts, screws, nails. Perhaps you could make one of these items, but what would you do with one stilt or one caltrop?
The description says it can be "folded, twisted, hinged and bent to form almost any known tool." It doesn't say any known item.
Some of your suggestions are probably too complex and have too many moving parts ie Water pump, lock, Astrolabe, water filter.