i've been using a cerial box for 5 years and it cost me £3.50 from spasda
seen all the mod cons with bling on and i think they are ok if you have 1000 pots to fill but for a few have a look round for self make stuff
used one a few months ago and the girl behind me loaded it back up to the top but didnt close the slide all the way. you had to be there as she wondered why they weren't coming out.