I recreated the Hogwarts letter using the information for the party and used the antique style paper from Office Max. I found a picture of the train ticket and printed those on card stock.
The most important part was the Hogwarts seal! Purchased off Amazon, I also bought a wax seal kit with red wax. I ended up using a stainless steel 1/2 teaspoon instead of the small spoon in the kit. It took a few tries to get it right!
I wanted to have pictures on the walls by the staircase. I searched out the best pictures that would work. I used the websites below to enhance and enlarge the photos. I printed them off on cardstock and used double sided tape and packing tape to put them together. We used blue packing tape to hang them on the walls. Enlarge Photos http://www.blockposters.com/create/ Enhance Photos http://waifu2x.udp.jp/