
Edited this to add a video from Ellen Wolters on how to use a grid for Quandry.
I belong to a group of CZTs (Certified Zentangle Teachers) who are working on a deck of cards made from ATC (Artist Trading Cards) that are 2.5" x 3.5". We can play with the cards by adding color, fabric, collage and such, but we must add tangles to each one. When they are complete, we will send them to the host who will separate them into different decks of 52. We will then each receive a deck of cards with each card coming from a fellow CZT. What fun and just a little pressure. Some of these people do such beautiful work, which I'm sure you've seen out there. I find myself intimidated
Anyway, I am in the process of doing 53 ATCs (one set will go to the founders of Zentangle, Rick and Maria) for this trade. I wanted to share my process and will reveal some of the finished ones (no, you won't have to look at all 53!) in the future.

Here is one that I used glitter glue to make a string. After it dried, I added Copic markers. Won't this be fun to tangle?
Some I only played with my water colors: