Three years ago, I designed this Balloon Cart in Tinkercad.  I thought I would feature it in this blog because I been finishing up another similar project.  This design has been downloaded numerous times from Tinkercad.  I think they are just after my balloons.

Here is the link to view it in Tinkercad:  Balloon Cart

This link will let you view it in MakerBot Thinkverse:  Balloon Cart

I do not believe that it can be 3D printed without some tinkering.

https://www.tinkercad.com/embed/lsOGqEv4J22?editbtn=1