Is there such a thing?
Seems like we have all kinds of bits and pieces left over from kits and projects. Ordering sprus or replacement parts takes a long time if even possible.
It would be cool if we could input a model number, spru letter number, position number and PRESTO, someone has the part you're looking for! Mailing these plastic bits around shouldn't be too much of a burden either.
Just an idea, I don't have a lot of datbase experience though, so it would be a task for a more reliable person.