Looking for dosing container ideas

[gregzz4]

I'm looking for single containers that can be rinsed out, and not interested in big and bulky things that take up space
I would prefer square-sided stuff so I can 'bookend' them for my Big 3

I kinda like this style, although it's a bit difficult to rinse out
If it's all I can find, so be it
These are 5l jugs, so perfect
http://www.usplastic.com/catalog/ite...5623&catid=816


I saw a post on RC where someone had bought similar jugs from Walmart but I haven't seen them

Thanks for any help