I do like a good storage box, whether for food or other detritus around the home and I discovered Really Useful boxes around five years ago. They come in lots of different shapes and sizes and you need to be wary that you are comparing like for like as boxes can be the same capacity but a different shape.
The boxes are incredibly strong overall and some of mine have survived being dropped onto the garage floor without being damaged (and also protecting the contents). In fact, my wooden garden table fell onto one of these boxes; the box survived without any damage whatsoever but my table was a different story... They are designed to be stackable and the lids clip onto the base via two handles, which hold it firmly in place.
I have around 50 or 60 in total and they are mostly put to use in the loft and garage, storing things like bird seed, paperwork, tools, garden equipment, Christmas decorations and so on; there is even a Really Useful box designed to be the right size to store LP records (and I can vouch for the fact LPs fit in perfectly).
As long as the boxes are the same dimensions on the base, each will stack very neatly onto the one below and the bottom of the higher box is held in place by the raised edge of the lid of the lower, so there is no chance of them accidentally falling over. As they are also clear, you can see what's in them as well, although for stacked boxes a label stuck on the front is very helpful.
If you like being organised, I think you will like the Really Useful range of boxes. I have not regretted my purchases, even though I have owned them for several years and they are subjected to extremes of temperature, being mostly used in the attic and garage.