A spherical shape like a ball.
It is a rectangular shape. If you were to roll out the whole roll it would be rectangular! And weird question! I like it! ;)
Cube
cuboid
A sphere and a cylinder can roll straight.
A cylinder
A pyramid will not roll and you cannot stack objects on top.
A heptagon based prism has 8 vertices and it can roll.
a bagel
A cylinder
it is a cylinder
A hollow ball.....