I don't advise the circular drums because most of us have a "mix and match" approach to grain with many varieties as well as a large quantity of base malt.
Malts such as Crystal, Caramel, Chocolate etc can be bought in quantities as low as 500g and they need to be accessible as well as being kept in the same conditions as the base malt.
Because of this, I much prefer a rectangular container that is black/grey (so that there is no sunlight), can be sealed (to prevent access of insects and moisture), is stackable (to cut down on floor space) and can therefore be smaller and cheaper than the ones proposed so far.
I also put an unscented dehumidifier into each storage bin to keep the moisture down, even if the contents haven't been opened. Here's a bin from Argos that may be suitable ...
http://www.argos.co.uk/product/7259380
Enjoy. :thumb:
That seems excessively thorough.
Do you iron your underwear by any chance?