These have all the D&D priest spells, plus cards for writing your own (I need those since that's exactly what I've been doing) and a few other handy cheat-sheet cards. I had been keeping track of my spells using a small notebook, but it was rather disorganized and I only write spells in as notes, not full descriptions. That meant the DM had to constantly flip through the handbooks to figure out what exactly would happen when I'd want to cast a spell- and this tended to waste time. Since I play a priest with little in the way of combat abilities and no magical healing ability, the trade off is lots and lots of spells. (I just counted how many Cyneric can use and ended up just shy of 125... sheesh, why does he always use the same dozen or so?)
Anyway, now all that time spent flipping through pages to find a specific spell is a thing of the past! I'm looking forward to the next game where I can pick the spell I want from the index of my spellbook (yup, I made a color-coded index), shuffle through my alphabetically arranged deck of cards, then pass the one I want to use over to the DM without any interruption to the game. Yay, organization!
The only downside? I didn't want to carry that entire box of cards and instead only tote around the cards I could use. This meant it was time to sew a pouch to keep them in, of course! I wanted to make this special, though, so it would look like something Cyneric would carry. I found some fabric in my craft supply stash in nearly the color of his robes and embroidered feathers onto it before turning it into a bag. (I picked feathers because they're part of his holy symbol.)
Here's the finished product: