Resting in a small chest set on a pedestal kept in a room populated with various artifacts lay two spheres that could fit both hands. One, glowing a brilliant blue-white, as a flame. The other darker than the blackest night.
God of Strength in the Night, Hiding your Numbers, and The Silent Kill.
Pcs learn of high power magics that allow them to banish weapons and suits of armor to some 'elsewhere' place until such time as they need it. reduces encumberances, gets fewer questions, and when the PCs get jumped by thieves in the ally, they can summon their suits of full plate armor with weapons drawn.
Lesser powers would allow them to summon their weapons from another physical place, drawing them to their hands like Luke skywalker summoning his lightsaber on Hoth.