Just look around your desk and pick something. With such a short project It’s best to pick something small.
Stapler
Staple Remover
Pen Holder (I currently use a mug)
Tape Dispenser
Super Glue container (my lids all junky)
Headphone cord management
Webcam
Etc,
Not sure what they look for in an Uni interview, skill set or ideas? Maybe someone else can chime in. But best to tailor your efforts to the area they prefer.