first models doesn't mean bad models. thanks for uploading your meshes.
Just a little tip: when you are making your models, put by default one material, this will avoid the need to put a material manually o needing an .object file.
ex: for the pinecone, instead of putting the material name as 'tetrahedron2_auv' put 'PineconeNutmeg'.
Be careful, even the simplest model can be stolen and claimed by someone.