When I visited my parents’ house, they had an apparatus hanging from a door frame we used to call the “Jolly Jumper.”
It’s basically a seat that hangs from the door frame on a spring, and your seven to 12-month-old (and beyond) can sit inside and jump to their heart’s content.
Mine started in the Jolly Jumper at about 7 months. Luke, my younger one, jumped and giggled, and he had a great old time. Curt, my older, took the Jolly Jumper to a whole new level. Extreme Jolly Jumper, if you will.
He wouldn’t just bounce; he’d SPRING INTO THE AIR, getting slack in the line and landing back on the floor with a gentle “thud.” He’d laugh and laugh and laugh.
However, his most famous feat was planting one chunky baby foot on the ground and spinning himself, nonstop, for minutes on end. I have him on video shrieking in delight.
While most kids don’t do that, they do benefit from the movement, the jumping and the stimulation. You benefit from the time to get a shower or hear baby giggles.