I have basic bricks as my 1. Stuff like 1x1, 1x2, 2x2, <those as plates, 1x1f round, and 1x1x5.
For 2 I have all the 5 brick high bricks
3 I have all of the 1x's
4 I have all of the 1x's in plates
5 I have all of the 2x's
6 is all of the 2x's in plates
And my 8 is ramps
The rest I just right click as I use.