My younger daughter last August jumping from her grandma's bed onto a collection of mattresses, sheets and pillows, which she and my nephew had gathered together beside the bed to have a "homemade trampoline". They are quite resourceful - and at 4 and 3,5 years of age, also quite strong
I used {Just Because Studio} by Dani Alencar's
Time To Rock. It's March' featured kit...