Icon for scrap metal?

[HolyWillRise]

I have an Engineer which can build big robotic/mechanical spider, everytime the machine (spider) dies, it gonna drop scrap metal.

The problem is that i can't find good icon for scrap metal. Can anybody help?

 

[Devalut]

I Take it you searched the icon section for this elusive icon?
Otherwise I would just opt for the Engineering Upgrade Icon and be done with it:

 

[deepstrasz]

I've included a pack with all icon types: passive, autocast, upgrade etc.

Cropped from: https://pixfeeds.com/images/16/432089/1200-519134010-scrap-metal.jpg