Things to always have when trail riding

On our last ride, Swamp Monster's soft front tire - which fortunately turned out to not be a flat, got me thinking about things we should always have out on the trail. So I thought I'd start a list of items and tools we might want to have. The weight of these items does add up, but not nearly as much as how much of a PITA it would be to get a bike with a flat tube back to the truck, not to mention the tire you'd destroy, and possibly a rim. The simplest repair can be impossible if you're missing a crucial tool. At Tahuya we might be able to get away with leaving some of these items back at the truck and sending someone back to fetch them, but not at the Desert 100 or during an Enduro race. The list is pretty extensive, but a lot of the items are pretty small. At some point you have to decide what the chances vs weight/size of needing some of the items is. Flats seems high on the list. Breaking a chain? Not so high. Needing a spare fuse or bit of wire? Probably not high, but then again those items are small. I'm not sure every one of these is a must-have item, but you know what the Boy Scouts say: Be prepared, mutherfucker.

Feel free to modify this original post to add to the list.

1. 21" spare tube
2. CO2 inflator
3. Two CO2 cartridges - one will top off a tire but not fill it
4. Or a compact MTB pump?
   
5. 2 tire irons
6. axle wrench(s)
7. valve stem remover
8. Patch kit - much faster if you can find the hole and repair it
   
9. Socket T-handle (Motion Pro makes a nice one)
10. Sockets - hopefully you can cover everything with just a few sizes
    
11. Allen keys - 4mm, 5mm, and 8mm usually cover it, but check your bark-buster fasteners
12. Phillips and flat-head bits if your bike needs them
    
13. Bit-driver
    
14. A few feet of SS safety wire
15. Spare fuses
    
16. Multi-tool
17. Spare master link
18. Spare fasteners
19. Zip ties
20. JB Stik - you don't need an entire tube, maybe an inch or two of it
21. A few feet of electrical wire
22. Tape - electrical? Duct?
23. Tow strap
24. Chain breaker and a short section of spare chain
25. Small flashlight
26. A few feet of clear plastic tubing
27. Copy of ID, insurance card, cash
28. Spark plug and plug wrench
29. WD-40 - good as a water dispersant, plug cleaner, etc
30. Superglue
    
31. Kitchen sink
    

Try to work on your bike using only the tools in your tool bag. This ensures you have what you need in there, and also gets them out so you can clean them, get a light coat of oil on them, or replace any that have gotten rusty.