Seatbag

Here's a list of the usual items I keep in my seat bag at all times.
The seat bag itself is a medium sized Banjo Brothers bag.
They are nice bags that are fairly inexpensive.

As pictured I carry:
1- Spare 700c tube w/ extra long valve
2- tire levers
2- valve adapters
1- chain tool
1- multi hex tool
1- pocket knife multi-tool (not pictured)