George Thompson's dolls house

By the time George Thompson was seven and a quarter, he owned a dolls house with a collection of peg dolls. (PROSE: My Special Book)

History
The dolls house, along with the peg dolls, once belonged to Claire Thompson. She later gave them to her son George, but they frightened him, and they were locked away inside his cupboard. He wrote about this in his special book. (PROSE: My Special Book)

Not long after George turned eight, the cupboard in which the dolls house and peg dolls were stored became a psychic repository for his fears due to George's Tenza biology; the peg dolls became animated, and when George misunderstood when Alex and Claire spoke about taking him to a doctor, he interpreted it as a rejection of him as their son, causing the peg dolls to begin kidnapping people and stealing things that scared him.

When the Eleventh Doctor arrived, he tried to help George face his fear. He deduced there was a powerful alien presence and the monsters he feared were real. When he opened the cupboard to face these monsters, he found nothing. He realised what George was and forced Alex to remember that Claire could not have children. George became frightened of being rejected, so the Doctor and Alex were sucked into the cupboard by the peg dolls.