What to do with all this Sprue?

One of the strange questions I was left with after a lot of 28mm kit assembly (and it was not the wife's "Why, oh why did I not check out his hobbies deeper before I married him!") was - "What do you do with all this left over sprue - it seems too good to throw away, think about the planet". When you clip apart metal kits all spare "lead" (I will call it lead even though we all know it is not really lead) into the jar for melting down at a later date "for something ". I have taken to keeping strips of sprue thinking that it also will come into use at a later point (see below, a solution looking for a problem - a term often used in a nasty way to describe AI):  

I have amassed quite a bit of it now and it is becoming a bit of a storage problem (three full cartons of plastic [empty] ice cream boxes and still growing) and something I need to consciously hide from Great Tumberg as it does not endorse my carbon footprint positively! The closest I have come is a useful link from Renko:

https://iagsmgm.blogspot.com/2016/12/minefields-barbed-wire-exploded-mine.html?fbclid=IwAR3bCPqjw8RqXAdmcYSgJIVYSYTqh0_djmA-m-HWMqckmzT1eqEW4MpuXmc

Which means instead of strips I should be keeping corners and rectangles (pass me another empty plastic ice cream container and don't tell Greta). I should add that to save a small portion of the family's carbon footprint I am using the empty butter boxes (very thoroughly cleaned I may add .. so the detergent usage has gone up significantly) as perfect 28mm Squad boxes! My initial thoughts on sprues as they would be perfect as battered interior supports for broken buildings and making a frame for other buildings has yet to be "instantiated".