In DC, yahweh (god) is the most powerful, and genesis has a power similar, if not equal to him. He was the reason that god abandonned the DCU, because he was afraid of genesis. He was one of the more powerful beings in the DCU. As soon as he was created, god and all of the host of heaven locked him away because of their fear of him.
1.Heart of the Universe
2.Infinity Gauntlet
3.Ultimate Nullifier
4.Starheart
5.Sword of Truth
6.Key of Effrul
7.Mjolnir
8.Cosmic CUbe
9.Darkhold
10.Gravity Rod
11.Armour of Merlin
12.Letter of passage to outside of creation.
Destiny's (of the endless) book
Thor's Runes
Ruby of Cyrottak
Amendiel's sword from his battle with lucifer
Excalibur
Book of the Vishanti
Crimson Gem of Cyrotak
Crimson Crown
Wand of Watoomb
Witchblade (image)
Orb of Agammoto
Dragonfang
Twilight, The Odin Sword
Amulet of Agamotto
Eye of Agamotto
Sword of Kamuu
Ebony Blade
Psymatar
Ka-Stone
Hellfire Helix
Magik's Sword
Doom's Armour
Scarlet Scarab
Portal to outside of creation
Portal to outside the omniverse
Cage of Cyrottak
Hand of the Vishanti
Satan-Sphere
Lasso of truth
Bracelets
Gauntlets of Atlas
Sandals of Hermes
5 fingers of Annihilation
Quantum Bands
Nega-Bands
Silver Surfer's Board
Wand of Sattanish
Green Arrow's Arrows
Staff of Gandalf (lotr)
Staff Of Saruman(lotr)
Other 3 Staffs of LOTR wizards(lotr)
Palantir(lotr)
The One Ring(lotr)
Plus ANY equipment forged by or that is often used by pantheonic gods and any beings more powerful than them (michael, lucifer, anti-monitor, etc...)
More: http://www.drstrange.nl/drstrange/s..._indexitems.htm
non-mystical:
Ray's Size-changing suits and technologies
Quardian Yellow power ring
Dimentional Transporter
Celestial Tech
Cerebro/Cerebra/Cerebra One
Reed's Technology
Doom's Artifacts
Tony Starks Technologies
Cable's Future Tech
Hawkeyes Arrows
Adamantium
Vibranium
Supermantium
Central Oan Power Battery
Last Green Lantern Ring
Batmans Utility Belt
Time Gauntlets (from 853th centuary)
Rip Hunter's Time COntrolling devices