Interlocking plastic, rubber, or foam product that can be cut to size? Would you know if there's some sort of interlocking plastic (or other material) mats that can be cut to any size and which is less than 1 inch (2.5cm) thick? Ideally probably 1 - 1.5cm thickness.

I'm trying to use this to hold together hobby electronics/robotics parts. Something like this:



I took an online class from a Russian instructor on robotics, and in Russia they sell this in their version of one of the electronics/robotics stores called Amperka (our version is called Arduino). However, it hasn't caught on in Western stores yet. I can't easily order it from Russia because of differences in the types of payment/banks they use, not to mention the shipping cost and time.

I've been trying to search for this online but I can't find what I'm looking for.
I believe that Matt's suggestion of what is called plastic mesh is likely to be the best find.



The image above shows a typical product known as 7 mesh plastic canvas, for 7 holes per inch and lists as being 13.5 by 10.5 inches without a thickness reference. I've seen this material in the past and found it to be about 2 mm, perhaps slightly thicker.

Another site has similar material, a wide selection, including some 5 mesh plastic canvas. That particular product must have rather large openings, allowing for an approximate 5 mm between holes! As such, it's likely to be stiffer as well.