[Ilmenite (Nick)]

I am sure that this has been asked many times before, so apologies in advance. Can anyone suggest or recommend suppliers of high tooth count 100+ timing pulleys? The usual interweb search came up with very little. The more economical the better as budget is limited.
Also, low cost worms and matching gears would be a good thing too.
For both metal is preferred, but plastic would be considered as application is fairly light duty.
What sort of items are these sorts of things salvageable from?
Thanks
Nick