Since the original prompt is essentially the first chapter of my story, I was wracking my brains about what exactly to do, so I think I'll take the second one.
"Wowee," Adele exclaimed, leaping into the time machine, "David, when you asked me to come to London to see this, I really didn't believe you."
"I never kid," David said, straightening his tie, "Now, you can look, but you must not touch any of the buttons. It can transport matter through time, but we have no way to get it back."
"Oh, alright," Adele turned and looked David in the eyes, "Why is it set to 1903?"
"My colleague tested it by sending a taco into the past."
"I don't see what good that'll do. Oh, David," she raised her arms, and before she could continue, her elbow hit the large red button labeled TIME TRAVEL.
"AHHHHH!" Adele screamed as all of her molecules were disassembled, and the world went dark. She came to in a dark alleyway. The sky was grey, the air was full of smog, and there was a sad little taco lying on the ground beside her. Adele stood up, took a deep breath and began to walk, looking at the concrete. Okay, either I am not in 1903, in which case there's nothing to worry about, or I am in 1903, in which case I just need to wait out the next century or so until David is old enough to be able to make a time machine. She felt her shoulder bump into someone.
"Hey, watch where you're going!" the stranger said, and she looked up. His face was hideous, and he was scowling.
"Can you tell me what year it is?"
The man laughed, "1093. Why, are you from the future?"
"Let me guess, you traveled here with the time machine you built."
"Actually it was my friend David's time machine, but, yeah. Do you know anywhere I can stay for the next hundred years?"
He laughed again, "I think my landlady Mrs. Aiken has a room free."