This > A box. A box with something else. A basket. A sword. A gun. A vehicle. Practice, practice, practice, practice... and MORE practice. Get 3dsmax or Maya. Practice, practice, practice. Only you can choose what to model. If you haven't modeled yet...model a box? Duh :)
A practice I did Months ago to test a #SubstancePainter Material simulating kind #stylized #handpainted style I did a #Cartoony Coal Mine and ready for a #Mobilegame