The kids have received many versions of stomp rocket over the years but one really does stand out above the rest.
This inexpensive kit has and still does provide them with the most satisfying experience. The rockets being so light really do travel quite a distance and launch with a rather satisfying pop.
If a larger child (me) decides to give the pressure pad a really good stomp, the air time of these little rockets is really quite impressive.
The stomp rockets can be bought separately which is a good thing as a number currently reside in ours and the neighbors guttering.
I have found both UK and US equivalents on Amazon..