This One Card stamp set from Altenew may just be the easiest card you will ever make. This set contains 2 clear photopolymer stamps that adhere well to acrylic blocks (sold separately). The set simply states, "I only make ONE birthday card per year. You better love it." What could be easier than picking a favorite color for your card, stamping it in black, and adding the second sentiment on the inside. Of course, you can elaborate on this too and remind everyone of the time and effort handmade cards take and that they should appreciate it. This set is made in the USA.