Take photos of all the children before they leave for the summer holidays. Use the photos with names for:
Pegs
Special Helper display
Drawers
Register on interactive whiteboard
What equipment is already there?
I always seem to need loads of plastic pots for counters, number cards etc. I always buy the Ikea children's bowls which come in a set of 6 for £1.00
Take photographs of the contents of every drawer and stick it on the outside.
Take a photo of the way you want each area of the classroom to look so that when children are tidying up, they know what it should look like.
Think about how you want to store pencils, rubbers, alphabet cards etc.
Think about how/where you want to store water bottles.
Write names on the children's books and storage files.
Put new paper up on all display boards.
What are your whole class rewards systems? Do you need to prepare anything for them?
There's loads more, but I'll be back later.