Thanks Nash, I hereby place the spinach box Idea in
public domain.

Jim, last winter my brake cables held it in place. This
year I need to find a way to secure it cuz I
changed to aero levers and bar end shifters with all cables
under the tape almost to the stem. Maybe a loop of old bike
innertube will hold it this year.

So far not cold enough to need it here.

One tip... I used the lid to strengthen the box
edge by cutting away all but the sealing
channel.

My wife keeps buying spinach this way so I use
the boxes for everything I can think of e.g. Bike
parts bins.