With racing season here it's time to get organized. It would be a real bummer if you drove 2 hours to your bike race only to realize that you've forgotten to bring something and now you can't race because of it. Or your race is over and you realize you're hungry but forgot to bring both money and food. Now you have to drive 2 hours home before you can eat and you can't stay and socialize because you're too hungry.
Get a backpack to keep your bike racing gear in. Use it only for bike racing so you can always keep it packed. make sure it's big enough for all your stuff but not so big that it's heavy. I say backpack because you can strap it to your back and ride your bike racing gear with you when you go from point to point during warm up and after your race.
Make a checklist for yourself. Pin the checklist to the inside flap of your backpack or keep it in the front pocket. Maybe get it laminated so it won't disintegrate in the rain or wear from the sun. There are places that will laminate things for you, sometimes libraries will do if for your for a small fee, or an office supply store.