LEGO IDEAS - LEGO Wheelwear: The First LEGO Modular Wheelchair for the LEGO Universe!
LEGO part 80440c01 - Yellow Minifigure, Utensil Wheelchair with Open Sides and High Arm Rests with Trans-Clear Wheelchair Wheels with Technic Pin Hole and Black Trolley Wheels (80440, 80441pb01, 2496) at BrickScout