You will definitely need chewing gum or as you will commonly come across, LED Binkie Necklaces. These let you have something to chew on, provide you with a constant light show and are easily accessible.
Wear the most comfortable clothes that you have! This means literally and mentally. A lot of times the clothes you feel most “comfortable” in are not actually comfy but, since you look good in them you are less self conscious. You do not want to be self conscious during your roll and mostly your inhibitions will be gone so this isn’t an issue, but definitely take it into consideration. Shoot for something that you look good in, AND is also comfortable.
As a general suggestion, create a “Roll Bag”. Stuff it with personal objects that you are fond of. Yes that means your old teddy bear or Dragon Ball Z action figure of Super Saiyan Gohan 2 from the Cell saga.
Get a Vicks Inhaler and have someone blow that shit (lightly) in your eyes and nose.
Shit feels FUCKING EPIC. Anything with flashing LED lights is bad ass. Your vision is enhanced and you get intense tracers regularly.
Camelbaks are a solid base for a Roll Bag. They provide you with a source of fluids (whatever you decide to fill the pouch with) and are light and small enough to still be able to dance like a robot with, however big enough for all your Rollsentials™.
Other good items to throw into your roll bag include (but are not limited to…) deodorant (You’ll need it for them sweaty post dance pits, and if you just want to take it out and smell it, it will smell 100X better than it normally does), lotion (rub it in your hands, or have someone else do it and enjoy), contact solution, money (for more Molly duh), Marquis Testing Kit (so you dont buy any bunk Molly on your adventure, assuming your getting it at the location of your first roll… not recommended!), candy (something sweet, minty, fruity, and extremely sour; normally the obnoxious, overly flavored types are PURE BLISS when your rolling balls), wet wipes, hand sanitizer, business cards (to hand out to all your new friends your going to meet if you decide to go out), pens and paper (to write down all your epiphanies, remember phone should be OFF), chap stick, Paper Diffraction Glasses, pictures of your pets, bubble wand, and last but not least your Molly.