If it's a very small plant and the roots don't take up more than a very small spot in the laying bin, it's okay. A fake plant would also be okay. The issue is that the roots will eventually grow out and take up the whole bin.
If you go that trash can route, you have to wait until she starts digging in the laying bin then you move her to the trash can. Then you leave her in there until she is done. She wont take more than a few days, so you don't need to give her UVB, but she does need some light and a branch to sit on while she is in there.