Not sure if anybody has been made aware of this since I didn’t see any staff post this, but you could copy the AssetId of a decal directly from the toolbox now! I believe this change was made last December since that was when plugins were given clipboard access (RobloxScriptSecurity only though…)
It copies the asset id (e.g.
rbxassetid://2795966663) onto your clipboard. You can then paste this in the Texture property of a Decal or the Image property of an ImageLabel. You can also set the Image property of a Decal or ImageLabel programmatically with this string.