Frugal-ness: 4/5 much cheaper than good quality shopbread and better for you
Time cost: 2-6 hours depending on the season and available sun/heat source!
Skill level: Easy peasy! Good holiday activity with the kids!
Fun-ness: Awesome fun-ness! Especially after a few sucessful batches and then you start making Vegemite pinwheels, adding cheese to the top, popping in a few seeds, experimenting with grains, trying pumpkin bread....