In the Asset Library, you will find a variety of standard shapes under the Shape tag.
Among these shapes are some standard sketch shapes:
- 1m cube
- 1m x 1m x 10cm board
- 1m x 10cm x 10cm post
- 1m x 10cm x 1cm plank
If you Edit Shape, they can be manipulated as any other sketch: pull/push faces, drag edges & vertices, cut faces, etc.