riding bag

I'm designing a new bag for cycling, climbing, hunting, fishing ("adventures") for holding all your gear while in the field and when traveling. What features would you like in it? What would be your dream gear travel bag? Thanks!

Do you have a riding bag? I have but I only use it when I ride long distances. For a spin inside our village, I don't usually bring it and sometimes even riding outside, I'm quite comfortable without it for short distances. What is the content of your riding bag? I wouldn't reveal mine but I...