You've found the Easter egg!
In programmer lingo, an Easter egg is an unpublished utility or series of commands that leads someone to a resource that's not a passive part of the software user experience. This page will update from time-to-time but remain unadvertised.
Today's Easter egg
One bottle of Twinkle Formula fountain pen ink
Coupon code: easteregg
*To use offer, enter the code above during checkout. Only one coupon code may be used per order. This offer is void where prohibited and may be modified or terminated at any time without notice. See our website policies for additional terms and conditions that may apply.