You can buy kits but I'm told they are much more expensive than buying separate.

I bought the little red bins every time I went to Walmart and labelled them for each size of bolt #4 up to 3/8". I actually did separate bins for the washer, bolt and nut but I think this was stupid, can just group together. Screws are a bit more difficult since so many types, just keep them in the box they came with.

Main thing is every time you buy a bolt get the package that has 10-20 pcs. Its much cheaper per unit than the 1-4 pcs and the trip costs you much more than the bolts.

Take a look at Mcfeelys, they have lots of organizing bins etc.