Cup Holder For Walker

Update: added a bottom to accommodate different bottle sizesBill of Materials3D Printed Walker Cup Holder (~ 3 hour print on bambu printers; 140 g; ~$3.50 material)2X Machine screws (M5 x 25 mm or #8 x 1 in.)2X Nuts (Preferably lock nuts; M5 or #8)4X Washers (M5 or #8)