KiwiCo designs and sells subscription-based educational kits, or "crates," for children to inspire creativity and hands-on learning in STEM (Science, Technology, Engineering, and Math). These crates, available for ages infants to teenagers, come with all the materials and instructions needed for a new project each month and are designed by experts to help kids build skills like critical thinking, problem-solving, and creative confidence.
I found the Motion Sensing Spider which I know my boys will love even though they will be too young to build it: https://www.kiwico.com/au/store/dp/motion-sensing-spider-pro…
If you add your email address on the home page where it mentions "Join our Newsletter and get 40% off!" it will add the offer to your Cart. Then you can find which crate you want, select get monthly deliveries and go through the process. You can select Pay monthly Annual plan at $39.93/crate which will get discounted to $21.50 for your first crate + $10.67 shipping = $35.40 . You can cancel this plan anytime eg after your first crate is shipped.
Unfortunately you can't stack the offer with the referral bonus. It is either or.
The ProductReview rating for KiwiCo is abysmal (even taking into account people mostly complain on these sites):
https://www.productreview.com.au/listings/kiwico