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There is a Legacy version here.

Mage's HatItem 3+

Arcane Invested 
Source GM Core pg. 292
Usage worn headwear; Bulk
This hat comes in many forms, such as a colorful turban or a pointy hat with a brim, and is adorned with symbols or runes. It grants you a +1 item bonus to Arcana checks and allows you to cast the prestidigitation cantrip as an arcane innate cantrip.

PFS StandardMage's HatItem 3

Source GM Core pg. 292
Price 50 gp

PFS StandardMage's Hat (Greater)Item 9

Source GM Core pg. 292
Price 650 gp
This larger, fancier hat grants a +2 bonus and can be activated. Each greater mage's hat has a specific 4th-rank summon spell from the arcane list woven into its fabric, typically summon animal or summon elemental. If you prepare arcane spells, you can change the spell to a different 4th-rank arcane summon spell you know when you invest it.

Activate—Hat Spell Cast a Spell; Frequency once per day; Effect You doff the hat, causing magical energy to pour from it. You cast the spell stored in the hat.