Jeff decided to try one that he was... curious about... and typed "A belt that when worn will change the sex of the person wearing it from male to female or female to male." he then hit enter and then out popped a leather belt. He threaded it through his belt looks, latched the clasp and then felt his balls and penis slither into his body as breasts surged out of his chest. Using his phone Jeff could see she had turned into a her. This actually worked!!! What next?!?! "A silver necklace with a blue pendant that doubles a woman's breast size when worn" and then the necklace popped on Jeff's desk who excitedly grabbed it and put it around her neck. Her hands were shacking with excitement so it took her a few tries to get it latched but when she did her breasts surged forward straining her shirt... One last one! "An hourglass that measures a minute of time. When flipped the person who flipped it will either age 10 years if the sands flow into the vial with a + on it or regress 10 years if the sand flows into the vial with a - on it. The hourglass will start with the sand in the - vial" and then there was the hourglass which Jeff immediately flipped. The teen in the middle of her growth Every 3-4 seconds she'd age another year as she raced through growth spurts, spurting even harder as she was rubbing her crotch and the silver necklace making each cm of breast growth count double.
After a bit Jeff settled down a bit there was a knock on Jeff's door, "Jeff are you there? I'm here to collect your hamper for laundry" Her mother asked
Jeff took off the belt of gender change, how much could his voice change in 10 years anyways "Could you come a bit later?" Jeff asked after waiting about a second, and then realized that she hadn't changed back to male. Her door handle moved and the door opened showing the middle aged lady trying to see who her son had brought home... only to find some...one... masturbating on his bed, in his clothes with a damp spot... and was currently taking off Jeff's belt.
Jeff had like... a moment to think up of some way to deal with this moment