Even with puncture-resistant tires, a spare tube is always a good idea!
700 x 32-35 Tube fits: Priority e-Classic and Turi
16" Tube fits: Start 16" Kids Bike
20" Tube fits: Start 20" Kids Bike
24" Tube fits: Start 24" Kids Bike
26" Tube fits: Coast beach cruiser (non-electric)
26x3.0" Tube fits: e-Coast (electric)
27.5" Schrader Value fits: Priority Current