Missing rule: Magical and/or other experiments are to be performed in the lab,not the common room.
Ravenclaw Aesthetics ~~Slytherin I may be, but some of my best friends are Ravenclaws, and I believe in house equality ;)
HD Ravenclaw Phone Wallpaper by emily-corene on DeviantArt
As a Hufflepuff, I can confirm this.
Wizard Finances - Imgur
12 x 18 print on quality semi gloss paper Come in 4 colors that will fit the scheme of any house, and just so happens to be the Hogwarts house