Re: Design Element Repository
There more resources than the link posted by instinctive.de.; http://vector4free.com/vectors/search/icons/
There are so many of them that they sell them as template packs. I think the "clipart gallery" is very good and it even allows you to save your own designs in your own repository. Your asking a lot from members to share, as some of them make a livelihood out of using and designing small things like tyres, eyes, hair and many other things.
Re: Design Element Repository
While we're at it - here's another vector resource I have made use of on occasion.