Anyone who's read the Court of Owls arc from the New 52 Batman will probably recall a bit where (slight spoiler here) he is trapped, and surmises that fluid from the archaic camera equipment he is confronted with and an element in the marble flooring and walls can be combined with a spark to make an improvised explosive, and he uses that to blow a hole in the marble floor and escape.
While anyone who'se seen the old show McGuyver (about an ex-spy or something) may recall similar instances like when he used chocolate bars to neutralize acid (or something) and used an exhaust pipe, carseat padding and a lighter to build an improvised rocket launcher (or something) in 30 seconds. Other examples are pretty numerous.
I want to see an enemy- and enviroment-interactive power set which lets you do that: fashion a weapon or buff or boost out of raw elements. What those elements are and what you can fashion them into would be specific to your Origin as specified in character-creation, with some cross-overs, so for example a Tech-origin user could recover debris from certain defeated enemies, plus spare parts from equipment and objects in your environment and use them to construct a temporary ( iewith slow recharge) field generator (or neutralizer) or similar gadget, while a Magic-origin user of this power can loot debris from other enemies/objects and fabricate talismans, runic wards and similar artefacts with supernatural qualities. A Science-origin user can develop chemical compound toxins, boosts and neutralyzing agents (like the Batman/McGuyver examples above) using elements taken from appropriate enemies/environments while a Natural-origin user can get down and dirty with improvised explosives made from looted ammo clips and incediaries made from chemicals (some overlapping-style powers here with Science and Tech-origin users) plus smoke bombs, mustard gas, etc and also options to use looted weapons or debris of certain enemies as improvised shanks, bludgeons and other weapons. A Mutant-origin user, meanwhile, would have the option perhaps the most outlandish benefits, as they absorb DNA, chemicals etc from the organic matter of enemies and plants etc to give themselves bio-weapons and boosts.
This would basically be a power-set that allows you to perform a kind of Origin-specific speed-Crafting, but with much more impressive effects.
Just a rough idea, but any thoughts?