For cards I use a deck box then this while playing

It fits the unit card in the orientation we'd view it during play and the upgrade cards in the correct orientation as well.

It's been a great time saver and organization tool for me

Here is what they look like on Amazon

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https://www.amazon.com/dp/B01CS104FE?psc=1&ref=ppx_yo2_dt_b_product_details