Joint outdoorsy gift for ages 11&12?

[UncomfortableSofa]

Any recommendations for a joint gift for a boy and girl aged 11&12?

Ideally under £100, outdoorsy and something they can set up and play themselves.

Previous big hit was a pop up badminton set.

www.decathlon.co.uk/p/3-m-badminton-easy-set/_/R-p-300055?mc=8579661&c=GREEN

My DC have something along the lines of this, were about that age when we got it and still really enjoy it now

Second vote for a swingball set.

Ooh great idea.