I use plastic 40kg coal sacks for most of my non ferrous metal. 55Gallon drums for iron & scrapped microwave & computer cases for the small steel shred.

Dirty yellow for dirty copper, clean yellow for clean copper.
Dirty white sacks for Cast Ali, clean white for extrusion, various white for light ali & domestic ali.
Stainless goes into a scrapped dishwasher.
Brass in a small sack.

I will have some photos of my scrap by the end of the week for your intrest.