I have just finished the stitching on grandson #1's Tallis bag. Each color is also a different stitch, and I fashioned the center of the Star of David to be significant to him.
I may have used too thick a thread for this canvas...it entailed a lot of pushing and pulling. I used two strands of the three that make up Trio for most of it. The metalic is #16 HL gold. The stitches include basketweave (white and metalic), diagonal mosaic (lightest blue), horizontal mosaic (next blue), a form of brick stitch (copen blue) and one I made up, a cross stitch over two with a vertical stitch over it...sort of like the first three stitches of a Smyrna Cross, for the darkest navy swirl.
I will blushingly admit that when he saw it a couple of weeks ago (not yet finished) his comment was "AWESOME". Now that's a LOT of praise from a 13 year old!
Now I have to begin stitching on his sister's Tallis bag as she will also get a Tallis for her Bat Mitzvah as well.
No time for any stitching for myself for a while (sigh).