A Tom Stoppard riddle

Can you identify two Tom Stoppard plays represented by a single picture?

As my mind wandered while assembling some flat-pack furniture, I was (perhaps inordinately) pleased with myself for coming up with a riddle about one of my favourite playwrights.

What TWO Tom Stoppard plays are represented in the picture below?

Picture of a drill with caption “Ceci n’est pas une drill”, in the style of an oil painting.

For hints and inspiration, Wikipedia has a list of Tom Stoppard’s works.

See also