Utility items! Any system, any setting.

Because one I made up a few months ago for 3.5 use (which is adapted simply enough to other fantasy games) seems worth sharing with even more of the world. (The pricing is based on the principle that utility items should probably cost less than similar combat items which could be inferred from an old 3.5 dev article.)

Mitt of Oven Summoning

If not for the various runes stitched onto it, this oven mitt would look fairly ordinary. The wearer may summon a single 20' cubic brick oven wherever there is flat ground and open space to do so. The interior of the oven includes several metal racks, allowing multiple food items to be arranged efficiently inside. Ten minutes after it is summoned, the oven heats up as per the spell Darsson's firey furnace.

At any time, the wearer can command the oven to cool; this allows them ten minutes to safely remove items from the oven before it disappears. The user of the mitt need not continuously wear it to keep the oven in existence, but cannot end the cooking cycle without first putting the mitt back on. The person who commands the oven to cool need not be the same person who initially summoned the oven, but does need to use the same mitt.

The oven can exist for up to seven hours per day; this time need not be consecutive. If the oven is not dismissed before its daily allotted time runs out, or if it is successfully dispelled, the oven will disappear immediately and any items contained within will drop to the ground.

Moderate conjuration; CL 7th; Craft Wondrous Item, (Leomund's) secure shelter, Darsson's firey furnace; Price 8820 gp.