With the economy in the shitter who can even afford a Dunny these days? Why not just print out these free paper toys and make one yourself? You'll score bonus points for telling her it's handmade!
Readymechs are free, flatpack toys for you to print and build. They are designed to fit on an 8.5"x11" page and printed with any printer. You’ll need double-sided tape, thick matte paper, and 10-15 minutes for build time.