I'm a wee bit confused. If you do not have time to make or buy anything and you do not have any clothes that work... I'm wondering what else is there to suggest ?
I will second that you could easily make a simple skirt in a day, even as a first project.
Actually in the pipes:
- Remaking Ser Loras doublet.
- Luke Skywalker, A New Hope
- Wind Waker starter costume in swim material
Eventually: Paul from Dune, Faramir, Harry Sullivan