Saving Money On Soaps
Great tip! Its true that you can use soap pretty much on anything. Just be sure its soap that does NOT contain SLS (sodium lauryl sulfate) and/or triclosan. SLS is what makes soap foam up and is a skin irritant linked to several skin problems and skin allergies...
Printing on Contact Paper?
You can run it through but it wont dry. It will smear to the touch. If you are looking to make your own decals, they have special decal paper (I think by Avery) that you can print on and cut out. Very similar to contact paper. You could try and do your own...