Hi lennig.. Ebay has oodles of search options but lets keep it to your Q. I'm going to assume you need a new mousetrap lol.
So, in search above .. mousetrap and voilà , almost 1000 items. Now on left side of page is a breakdowm where sellers chose category. Now you can browse all but more likely to find that trap in home and garden rather than toys or books.
Ok 200 mousetraps in H&G .. you want auctions rather than Buy it Now. Continue scrolling down left side select auction under buying formats. Can also choose location.. Canada , North America or Worldwide. Hope this helps.