A laundry room doesn't require a lot of extra supplies, but there are a few which come in handy.
Rowenta DX8800
The extra large water tank of the Rowenta DX8800 iron makes it ideal for folks who use a streamer often. This iron has some heft to it which many customers consider a bonus. They say it helps get the wrinkles out.
Dryer Balls
As seen on TV, these dryer balls cut the time required for clothes drying, make clothes softer without chemicals, and are reusable. Throw them in the dryer (they come in a two-pack) and let the dryer balls work their magic.