The Shimmer Trinket script was created by GM Estild and released at Ebon Gate in August 2017 via raffle, which was won by Siierra. It became generally available in February 2018 in Spellbound. The shimmer trinket is a pin-worn, non-functional item that allows a character to retain a certain look after removing said items when the trinket is activated.
You analyze your shimmering trinket and sense that the item is largely free from merchant alteration restrictions. The creator has also provided the following information: The shimmering trinket is a "Shimmer Trinket", which can store the appearance of wearable items and project them over your normal clothing when it's worn. Just wear whatever items you want in whatever order you desire, then ATTEND the trinket. Once worn, it will only display those items while concealing all others. You may also CLEAN it to remove the previously stored appearance. It is not currently active, but is set to: nothing special at this time. The trinket must be periodically recharged by casting Shroud of Deception (1212) at it or by merchants. A charge is depleted when the trinket is set to an appearance and every 30 days thereafter. You can tell that the trinket is as light as it can get.