Walmart discounts a selection of boys' and girls' slippers in
eight seven styles (Darth Vader Boys' Toddler Slipper pictured) to $3.88. Opt for in-store pickup to dodge the 5.97 shipping fee. That's a savings of $6 per pair. They're available in sizes 5 to 1/S to XXL, although not in all size/style combinations.