You'll need a hive tool, probably two because you're sure to lose one, and you'll need something to light your smoker and to make smoke with.
Some gloves - latex, washing-up gloves will do because even if you've got calm bees you're still going to get propolis all over your fingers, and your hive tool, and your clothes, the door handle etc..
A tool box would be good, to keep bits and pieces in - maybe a magnifying glass to see the eggs that are so hard to find when you're new. If you're handy you can make a box out of scrap timber.
If it gets cold you might want to get some insulation to fill the gap around the feeder in the super.
Once you've had bees for more than a few months you'll want more equipment, and you'll need a shed to store it in. ;)