Just stopped by one of my local LBS (love living in a bikey-town). They had both size INi Bento Boxes (I bought the small) and one made by Inertia Designs. Inertia makes a couple of boxes that look exactly like the ones made by TNi plus a 3rd version that is the same size as the large but has a side pocket that looks like it would take a pretty std-sized Nokia cell phone and a snack-sized Payday. Also, the box was lined with a stiff green waterproof liner.

They are all designed for a flat top tube, but, Corsair, you could probably get the large size TNi box to squish a bit and fit. The small one would probably lose too much volume by the time you squish the corner into the angle between your stem and top tube. The Inertia Designs box is too stiff to do any squishing.

I think the small size will be just right to carry my phone, chapstick, snacks and designer-ziplock wallet so my camera can go into my jersey.

www.tniusa.com
www.inertiadesigns.com