I normally use the 4 litre and 9 litre Really Useful Boxes to store my figures and scenery pieces.
However, these are a little too small for hills and similar templates, and get quite expensive for their relatively small volumes.
I've therefore just bought my second set of 10 x 35 litre RUBs from Rapid Racking: these work out at £10 + VAT each: https://www.rapidracking.com/en/rra/pack-of-10-really-useful-boxes-35-litre [free shipping on orders over £100]
I'm finding these to be a good compromise between internal volume / ease of storage / ability to fit a couple in the car boot for games.
Simon
I'm a big fan of the 4 litre. I'll have a look at the 35 litre.
I used to use A4 box files, but there was a lot of wasted space. So I bought some RUB9L and mdf insert trays which doubled my storage. Then I realised that the mdf trays are a fairly good fit for the box files and this should double my storage again. This only really works though for 15mm or smaller.
John
We have something similar over here, but I have never started to use them. I seem to be stuck on a variety of mdf trays or custom boxs. I can see the benefits, particularly for scenery etc.
Bob
I've increasingly started to use the Really useful 4 litre boxes. Thinking of trying some of the "hobby trays" they do to go in them.
Nick
Commission Figurines does some very good trays in various sizes. They're designed for 4 & 9L boxes.
The 35L is very useful for Scenery and is easy to take upstairs at Entoyment.
Now Hobbycraft is open again I will get some 4 and 9L boxes.
Miles