The Summer Festival has started, tentatively scheduled to run through Jully 16th. There are the usual quests and some new items to barter for, so check it out.
Of particular interest for level-cap characters are Anfalas Star-lit Crystals for 30 Summer Tokens and Essence Reclamation Scrolls for 40 Summer Tokens. As usual, the Star-lit Crystals are Bind on Acquire, so must be bartered by the character that is going to use them. The Essence Reclamation Scrolls are not bound, so can be sold, traded, or passed to other characters.
There are premium dyes available according to the rotating schedule: 6 Shire Peach Dyes or 6 Dark Clay Dyes for 8 Summer Tokens, and 6 Rohan Green Dyes or 6 Sunset Orange Dyes for 10 Mithril Coins. These dyes are available only during the festival, so they may become valuable. I have made a ridiculous amount of gold selling premium dyes since they were introduced. The market is spotty and some colours are more popular than others. Of course, if you like the colours and think you might want to use them, you need to stock up now.