Generally just water upto 35 mile hilly / 2 hour training rides (i.e. fast).
Longer then it's Isostar Long Energy and fruit etc. - e.g. a 3 hour 60 miler

or a 45 mile hilly.
CC rides just lots a water - 1 energy drink if hilly.
Sportives, then just about what ever I can cram in.....

Some food every 10 miles, 4 gels, 3-4 litres of energy drink, and any fruit at stops. Oh and the toothbrush once I get home
Water for commuting. Try to finish 500ml in the morning - just to re-hydrate.