New answers tagged sets
I think you have bag #2 from this set: 60022 Cargo Terminal, based on the tan 4x6 base plates, the black 2x2 round plate with 4 arms and the red City minifig cap. I've also cross-checked the rim piece, the 2x3 Red plate and the 2x4 yellow brick.
I've never tried it, but I suspect you can do this with Rebrickable.com. It lets you upload MOCs, which must have an inventory. It then lets you see how close your collection comes to building that set, including some possible piece substitution (i.e. similar parts, related molds, ignore colour, etc). Finally, it recommends sets to buy to increase your total....
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