Keeping your suitcase organised

Hey Everyone,

I'm going on a Ultimate Euro (45 days) in May and don't really want to have to keep re-packing my suitcase every few days because I know it'll start getting really messy in there.

I've found out about these packing cubes which keep everything from going everywhere.

My question/s is do people find them helpful or annoying and do alot of people use them.

I'm trying to get as organised as possible before i go this is my first trip overseas and i'm completely in the dark about the best way to pack everything.

If anyone can help that would be great.

Thanks Janie