Spread the Zero Waste love by sharing a gift card. The gift card creates a unique code and recipient can enter this code at checkout to subtract the gift card value from their order total.
So you can do a fun little riddle in their birthday card to figure out the code and then apply this at the checkout.
This gift card never expires. So no need to worry about when they will use it.
And of course, you can get a refund if they do change their mind on the gift.