water bottle cage
how do i attach a water bottle cage to my bike it has no holes on it , its a y-frame style mountain bike , its annoyin having to stop and get it out of my bag all the time
There are several mounts that clamp to the back of the seat to provide for one or two water bottles there. Also various approaches given here:
You can use something like this that will attach anywhere. I haven't personally used it, just noticed it the other day.