I don't know of any generators for the bags in G1, but you could create one easily in TableSmith (link in my .sig). It could look something like this:
:Start
1-3,old axe blade for use as hand chopper
4-17,boulders, small ({Dice~1d4})
18-19,bowl and spoon, [MetalType], battered
...
:MetalType...