www.designsbysick.com has one.

this site has a hammer and saw for free
http://www.purplehat.co.za/DesignCatalog/introfree.html

This is a good site for tractors & very reasonable *4u emmett

try ann the gran, they have quite a few (or had quite a few)

Secrets of Embroidery has some tractors, kind of expensive though.
http://www.secretsof.com/content/4155

Here, some sites with tractors and tools, but not applique. They are freebbies.
http://www.schillersontheweb.com/designs.htm
http://www.geothedigitizer.com/
http://www.angelfire.com/hi/debbiedesigns/page3.html

http://www.thefind.com/query.php?query=embroidery+tractor+applique+design
http://appliqueforkids.com/index.php?cPath=35&osCsid=fe342d695a8480049f7202f1286d44c9
http://www.secretsof.com/content/4155 from Hatched in Africa
https://www.swakembroidery.com/info/transportation2/SWAK_btb_tractorhaulingeggs.htm
https://www.swakembroidery.com/info/featured-products/SWAK_btb_tractor.htm
https://www.swakembroidery.com/info/featured-products/SWAK_btb_TractorHaulingHearts_3Sizes.htm
http://www.embroiderygarden.com/5x7singles.htm
http://www.stitcherymall.com/display1.cfm?set_id=13856
http://www.funstitch.com/proddetail.asp?prod=EM08-10011

Here are a few more. Love them all
Jo