Dee Dee's Lab, as it appears in the episode "Dexter's Debt".
Dee Dee's Lab was what Dexter's laboratory briefly became after Dee Dee paid off his debt at the end of "Dexter's Debt". The lab was completely repainted pink except for a small section which Dexter used and it was completely filled with Dee Dee's things.
Dee Dee's Lab in A Dee Dee Cartoon.
In the episode "A Dee Dee Cartoon", Dee Dee is shown to possess her own lab in her room which appears bouncy, pink and full of other girly things that she enjoys and is run by a male-voiced computer with a British accent. Similarly to Mandark, Dee Dee accesses her lab through a keypad, but has an added dance measure. Unlike "Dexter's Debt", Dee Dee's lab appears in this episode with its own design. Inside the lab, Dee Dee is shown to have tea parties and makes sweets similarly to how Dexter makes his inventions. Like Dexter, she also has a giant robot named the Power Princess Unicorn and uses it to save the world from meteors.
In reality, the lab doesn't exist at all, as it is simply Dee Dee playing inside her room.