Enter in the Rubbermaid Carrier.
A sharp knife
Drill with two different sizes bits
Use The bigger bit to make a hole big enough for the jigsaw blade to fit through. Use a narrow blade.
Go slowly and don't be surprised if you can only do one cut or possibly two, depends on the thickness of your rubbermaid container. Mine were fairly thin, so we made one cut with the jigsaw and cut the rest with a very sharp knife.
In this particular case the carrier cost us $6.oo. We already had all the supplies.
Fit the rabbit to the box. This rubbermaid carrier will fit a rabbit up to 3 lbs, after that you will be looking into larger rubbermaid containers.
I made this one to transport a small rabbit that had to sit for a week at a transporters home without having to worry if the carrier didn't come home. BUT with the view in mind of living in southwestern Ontario and occasionally having to bring kindling does in the house during hard cold spells.
This could also be used as a guinea pig or other small animal carrier. Change the size of the wire as needed.