Here is a free fruit model for g-max or 3d-max from turbo squid. It may not be exactly what you want, but you could modify the models change their textures or something. While you are there you can search for others. Good luck...
Free Model from Turbo Squid
G-max is a free scaled down version of 3d-max. Its fun to use and very intuitive. Its a good starting point for 3d modeling. I had lots of fun with it, and I also learned alot from this program.
G-Max Download
Anim8tor is another descent free modeling tool.
Anim8tor Download
Blender is a good 3-d modeling tool, also. Its controls are a little hard at first, but they say practice makes perfect.
Download Blender