There is at least one lesson here: "Don't order 7 different kits at the same time, and multiple quantities of each. Mouser does not separate them for you." 
...I know, I know... there are somethings in a DIY which should be in my own hands.
I've found that you can add whatever text you want in the "Customer Part #" field in the Mouser cart ... I add a BOM from one project to the cart, go through and put "Dongle" or whatever into all the customer part # fields, then add another project to the cart and put in "SSR8" into all the blank fields (since they come out ordered peculiarly), watching that the order quantity didn't increase (if it did, then the part is used in both projects and in those i put in "BOTH" or "Dongle/SSR8" or something similar).
Then, when the items arrive from Mouser, I sort them out into appropriate project boxes or bags or drawers or whatever.
The other Mouser trick you always must do is to look at everything in the cart: go back and open up each item's original order page: sometimes while you may only need five of a part, the price break on 10 is so good that you get 10 for cheaper than five.
HTH.
\dmc
