Originally Posted by ScottCommutes

Sadly, not my experience:

Bike stand - not needed
Tires - replace as needed
Tubes - one or two spares, replace as needed
Lights - Lots of option here. For 5 miles, regular replaceable battery light can do just fine.
Raincoat - 5 miles. Doesn't have to be anything special
Winter coat- 5 miles. Doesn't have to be anything special
Boots- 5 miles. Doesn't have to be anything special
Heavy socks- 5 miles. Doesn't have to be anything special
Thermal insoles - ?
Rain pants- 5 miles. Doesn't have to be anything special
Grips - not needed (provided with bike)
Pedals - not needed (provided with bike)
Grease
Seats/saddles - not needed (provided with bike)
Seatpost - not needed (provided with bike)
Chains - not needed (provided with bike)
Various chain lubes
Degreaser - not needed
Chain cleaning tools - not needed
Crank removal tool- not needed
Freewheel removal tool- not needed
Rear rack and hardware - perhaps
New freewheel - not needed (provided with bike)
Food - 5 miles?
Reflective vest
Similar equipment for backup bike - not needed
Replacement rear derailleurs - not needed
Rim tape - not needed (provided with bike)
Cleaning supplies - not needed
Multi-port USB charger to charge all the lights - Lots of option here. For 5 miles, regular replaceable battery light can do just fine.
Balaclava - not needed (5 miles in Tennessee)
Different weights of gloves - 5 miles?
New wheels - not needed
Quick links- not needed
Replacement cables and housings - when needed. not the first year
Spoke wrenches - not essential
Replacement nipples/washers - not needed
Wheel truing stand - not needed
Bottom bracket - not needed (provided with bike)
Left side crank - not needed (provided with bike)
Rear axles - not needed (provided with bike)
Replacement spokes - not needed
Snow tires - not needed (Tennessee)
Multitool