I carry stuff to fix a flat, tire boots, a pocket knife, and this awesome set from Topeak (easily my most used tool - it is perfect for installing water bottle cages, amongst other things)
TopeakŪ Cycling Accessories ? Products - Ratchet Rocket? Lite, 10 bits, zip ties and a roll of electrical tape.
If I have something more major happen that I can't easily fix on the road, I'll just call someone to pick me up.

3 red plastic tire levers, pump, allen wrench set

I usually cary, mutli tools, five intertubes on my hybrid bike, chain breaker, valve caps and rings, tire levers x3 , and few other things i forgot.

Five tubes! Making a giant slingshot I hope.

2 tubes
2 tire levers
multi tool
mini pump

I like to be prepared, i usually bring three but i had so many flats on my previous bikes that i am bringing more tubes.

I would say so. I used to get lots of flats on my hybrid also. I found it was due to metal filings from the spoke hole drilling getting stuck to cheap rim tape. Crummy commuter tires and dirty roads also played huge role. New rim tape and better tires helped.

I would highly recommend Schwalbe Marathons when replacement comes due. I have only had maybe two (one for certain and I just feel there should be one other to make it believable) flats due to debris since I started using marathons over 13,000 km ago. Well worth the money to not have to change flats. I have worn more rims than flats come to think of it.

Multi tool (includes chain tool)
tire levers
spare tube
patches
mini pump (I have bad luck with co2 cartridges...)
spare seat post bolt ( it is unique & fell off once...)
Multiple lights & spare batteries in winter (Less lights the rest of the year)
band aids, cash, rubber bands
packable nylon bag to hold lunch that doubles as saddle cover in case of rain