Magesmiley
Explorer
Honestly, I'd pick 'fun' items. Stuff that's useful, but which might be a bit unusual. Most players don't remember the +1 sword that they got, but do remember the rod of wonder, ring of x-ray vision, or robe of useful items that they got.
Some that you might consider:
Ring of the Ram
Immovable Rod
Rod of Wonder
Eversmoking Bottle
Bag of Tricks
Circlet of Blasting, Minor
Robe of Useful Items
Folding Boat
Cloak of the Manta Ray
Glove of Storing
Decanter of Endless Water
Lyre of Building
Some that you might consider:
Ring of the Ram
Immovable Rod
Rod of Wonder
Eversmoking Bottle
Bag of Tricks
Circlet of Blasting, Minor
Robe of Useful Items
Folding Boat
Cloak of the Manta Ray
Glove of Storing
Decanter of Endless Water
Lyre of Building