Mine is a black make-up case by Modella–$12.00 at Wallyworld , its 6"by 9" and a couple of inches deep when full (keep waiting for themto get another in so I have a backup when I wear the zippers out on this one). It carries a gelpack, a temporary sharps disposal container, usually one vial of novalog (can hold more) alchohol swabs, a novalog pen (when traveling can carry another plus a levimer pen), a couple of syringes, a small pen needle supply, a themometer, some extra lancets, two infusion sets, two resevoirs, extra batteries for my pump, a quick serter and some paper tape. I put the go kit in a cooler in my car when I leave the house.
I keep my meter in my purse (or on my desk when at work), the meter case holds the extra strips and lancets usually needed.
I also keep a novalog pen and a few needles, in the small cooler on my desk, and keep a fully sugared soda-pop on my desk (work faster for me than juice)