Wear her panties on her head.

"Wear these," you command, handing her her purple panties. Her momentary gasp of relief is cut short by the rest of the instruction. "On your head. Like a hat."

She pulls them down over her mahogany hair and scowls at you. Loose curls poke through the legholes, making her look equal parts ridiculous and adorable. You smirk at her. That ought to make everything else she does more entertaining. What else could you have her do?