Like this advent calendar idea a lot - small and contained, so it can be kept out of reach. DIY Christmas Advent Calendar with Free Printables
DIY Toilet Paper Roll Advent Calendar - tie the ends so that no peeking ensues! Grande Grande Schloegel (Just in case you have extra toilet paper rolls!
Free Printable Vintage-Inspired Advent Calendar cards and envelopes. I love vintage Christmas! by Ella Claire
modern idea (easy) for an advent calendar
Christmas Craft Project: Advent Calendar-- think I'll sew some small, reusable cloth bags, and find a slightly different way to arrange the clothes pins, so that there's more space for the bags. Love the idea of painting the clothes pins, though!