The Syriac Orthodox cathedral in my area passes around elegant vermillion duffel bags with gold tie straps for the collection. They match the red/gold color scheme that is so dominant in that church perfectly.. I once visited a Russian churche that passed around four cardboard boxes modified with slots on top with labels indicating the purpose each was earmarked for (general, poor relief, and so on). This was a tad annoying in that one would expect to some extent the church might just follow the ancient fourfold ratio or sort this out for you, but I guess they valued transparency. A nearby ROCOR parish that has a most remarkable Archimandrite passes no tray.
As trays go, I prefer the posh brass variety with lids and felt lining, in a brown color, which absorb the clink of coins. These are traditionally offered at the altar in Protestant tradition, which we naturally would never do, but the trays do convey in a sense the blessedness of the gift.
A Catholic parish which serves the Tridentine mass does not pass a plate, rather, four ushers, two for each row, use baskets mounted on poles, which are delicately extended before each person. I am not sure if this is an old Catholic practice like the gigantic putty-knife shaped instrument held under chin of communicants to collect crumbs, in place of the Byzantine cloth, or a device implemented for this specific parish, which dates from the turn of the century and was financed by a local landowning family of great charitable wealth that is sadly extinct. This family is buried in the crypt underneath, which is now full, and there is an elevator concealed in front of the altar, view of which is obscured by the new altar installed for Novus Ordo masses, by which the coffins would be lowered.
Lastly, Robert A Heinlein prophetically described a typical modern vangelical church with his "Rollers" in Stranger In a Strange Land, but with one difference: members of his fictitious religion were free to put money on, or take money from, the collection plates, according to their need. Food for thought.