I use the smallest one from this set for liquids and put it inside the middle size one with the tooth brush, razor and bathroom items that don't need to be in the liquids bag.

http://www.amazon.co.uk/gp/product/B002FGTJXG

I put the whole lot through security, if they get excited about the bag size, the small one can come out and be compliant while I chew on about profiling being the way forward.

The largest one is good for travelling with the family and check in bags.