Art was just making the finishing touches on Madame Curie's bedroom, a large moving box with three levels, when he heard the door knock. He placed his rat-baby in the box, watching her move around, sniffing at the new house. "It's just like the one you have at home, Madame," he said to her. She gave him a little look, before returning to the exploring.
There was another knock.
He stood up, with the little cracking noises in his knees and ankles, and walked to the door. Who could it be? He opened it slowly and poked his head out. Ahh, it was... Paul, the Ravenclaw, cleverest kid, Herbology Professor, and current Hufflepuff Head of House. And... a student. He didn't know the student. "H-Hello," he said. It must have been the two people knocking, rather than one impatient person knocking twice. "Nice plant, err... would... would you like to-to come in?" he asked, raising his eyebrows.
Right, time to move. He moved his head back into the office, and opened the door wide, inviting the two visitors into his office.
++++
The tea was lovely with the Hogwarts water. Magic schmagic. Art didn't need aguamenti to fill his kettle up, to warm over the bunsen burner on his own little lab desk. Of course, it was far too small to create potions, but it was perfect for a kettle. Good ol' tap water, his slightly chipped tea pot was still full of up to 8 cups of tea. Madame Curie was down for her nap, and Art was going to catch up on the latest edition of National Geographic. After a sip, there was a knock. He perked his head up, and looked at the door. It was another visitor. He stood, walking to the door, and opned it wide.
"He-hello," he said, looking at the Head Boy. Ahh, it was the Gryffindor Head Boy. He grinned,
"Gryffindor. My own house!" he said with a chuckle.
"I... I uhh.. I assume you'd like to come in for a... cup of tea?"