Help me pack my double century drop bag

[TheMadOne]

I am planning to do a double century soon. The course is twice around a century loop, with a check point at the half-way point. You can send a drop bag to the checkpoint, which you can access at mile 50 & 150 (you can get back you your car at mile 100). The ride rules are randonneur style, so you cannot get assistance, except at the checkpoints. So I want to have anything I may need either in the bag or in my car.

Here is what I have come up with for my drop bag checklist (let me know what I've forgotten):

Dry clothes (in case of rain)

Jersey
Shorts
Socks
Gloves
​

Food

Gels
Bars
Bananas (potassium)
​

Drink

Sports drink (electrolytes)
Energy drink (caffeine)
Plain water
​

Parts & supplies

Tubes
Spare Tire
CO2 cylinders
​

Equipment

Shoes w/cleats
Lights (night finish)
Clear glasses (night riding)
​

Other

Sunscreen
Ibuprofen (pain/anti-inflammatory)
Pink Bismuth (diarrhea/upset stomach)
Antacid tablets
​