Day 25 - Favorite Magic Item
If I could pick a category, I'd go with Potions. They seem to be the most useful to all PCs at all levels. Sure, they have a single use, for the most part, and the effects don't necessarily last all that long in a lot of cases, but many are essential to survival. Any healing potion in any edition is a staple. If you asked someone whether they'd want a healing potion or one other item of equal value, I'd bet most would choose the healing potion. Anything else might or might not come into play but taking damage at some point in almost any game is just about guaranteed.
Artist - Rick Hershey
One of my favorites that was devised for the Potent Portals offering (available here at RPGNow.com) are the Shutters of Gruesome Grappling. I loved them so much, I put them on the cover! These nasty window coverings would protect against intruders by having tentacles spring forth, grapple, and constrict anyone trying to gain access without the password. I've had a lot of fun springing this one on players and employing it as a player when I fortified a small household in a town.
The original D&D 30-Day Challenge meme had a duplication and was a bit more edition-specific than I thought was useful for my purposes, so I made some adjustments and had some folks on the Internet give it the once-over. Here's the result and what I will be doing through the month of June as "CMG Extras."