When I first moved to Durham, before I had a car I recall taking a taxi to Target to get toilet paper.
A few weeks ago, in Columbus I took a taxi to Kroger to get provisions. I took a bit of convincing to get the taxi to drive me down there, wait, and take me back but an advance tip solved that problem.
I ended up visiting the Kroger in German Village. For my North Carolina pals I'll simply say it felt like being in a Harris Teeter. Kroger HQ's are in Ohio so these store are much nicer. In NC, there's a Kroger right down the road from me but HT is worth the drive.
So, back to Ohio.
Old reliables (non perishable, require no prep) for me include: Sprite Zero, Gatorade, Clif Bars & Cliff bars. With these things around I don't have to order a $12 dessert from room service if I just want a sweet nibble. And, if I don't want to risk taking the elevator to get to the company cafeteria (I have a newfound wariness for company elevators) or if I just plain miss lunchtime I'm not going to be grumped out for the rest of the day.
I mentioned my excursion to a Client. A Client who has been in a role like mine before (work away from home) and he offered to pick up whatever I needed when he does his "Kroger Run" on Sundays. Lo and behold, he brings me Gatorade.