We've built up a backlog of Kiwi Co science and activity boxes and need to get rid of them. I bought a bunch at the start of the pandemic and the kid is "over them". They are all new. Sealed if they were shipped individually, but Kiwi doesn't seal them if sent as part of a larger kit (like their Summer Camp kits).
$40 for 3
$75 for all 6
Drip Irrigation System (Retail: $25 https://www.kiwico.com/us/store/dp/tinker-drip-irrigation-project-kit/3121 )
Oil and water chemistry (Retail: $30 https://www.kiwico.com/us/store/dp/oil-water-chemistry/3303 )