Boxes, you will need lots and lots also a thick marker pen to mark them with what you have put in them and thick celotape/duck tape.

Also a good time to have a clear out so start taking stuff you don't want to the local charity shop !

Have a good phone round to see who are the cheapest house removals unless you are going to hire a van and do it yourself ?

I find moving an exciting but tiring time so make sure you don't leave things to the last minute try and work ahead of yourself and pack anything and everything you have not used in the last six months first.