So in today's session my group set out to what may be the final battle of the campaign, a war to dethrone a Drow Matron. Given my character, an Eladrin with multiple personalities (One for each season) does not need a full 8 hours for a long rest, I set out in the middle of the night for each of them to make a prayer to a god before we then gave a final prayer to our celestial patron.
Spring gave prayer to the Elven God of War and Order, and was surprised that we ended up with a Chainbreaker Scimitar (A +1 Scimitar that also gives advantage to break chains, manacles and similar bindings, and such things are vulnerable to it's damage).
Summer gave a prayer to the church of Macho Man Randy Savage, and made friends with the cleric on duty.
Autumn gave prayer to the trickster Gnome god, getting a flute and well wishes from the nice old lady at the temple.
And Winter gave prayer to the dwarven god of War, getting a one use blessing that gives the target a lot of boons for a minute).
Then on our second day at sea with pirate friends, en route to war, my character decides to play the flute for their girlfriend.
Then the DM asked me what my spell save DC was and rolled a wisdom save...
So I have learned I have a flute that casts confusion centered on me (I am immune) as long as I play it (Once something makes the save or has the spell end on it, it's immune for a day)
Using an item you haven't identified is always a recipe for disaster. I have not once heard of a group using an unidentified item and finding out it was anything other than the worst possible thing to use in the situation.
I once unleashed an ancient evil on the world in a failed attempt to open an unlocked door.