Kids have a fascination with bubbles, and I've seen that with my little niece, who becomes an even more bouncy version of herself when she sees bubbles. I still love bubbles and once in a while end up buying those small bubble kits from street vendors. And I blow bubbles and stare at them till I realise my fingers are all sticky and my feet are wet.
As kids, we didn't have the patience to go and buy bubble kits, so we made them at home. The timing of our bubble play would coincide with my mother's stitching projects. As soon as a thread reel would get over, it would become a bubble blower. Laundry detergent mixed with water in a little steel bowl from the kitchen - that's all we needed for an afternoon of lazy fun.
Sometimes we blew air into the bowl till multiple bubbles would overflow all over, and the bubble-y sound was a bonus. I'm sure you've done that with the last bit of some milkshake and a straw.
The bubbles from laundry detergent were not as great as those you get in a bubble kit, but it was good enough to keep us occupied as we watched them slowly drift down three floors. Shaking and wobbling, sometimes touching a wall and bursting quietly, sometimes reaching all the way to the ground, it was quite amusing to watch those bubbles shining in the afternoon light.