Items in Go! Princess Pretty Cure

Below is the list of Go! Princess Pretty Cure items:

Princess Perfume being sprayed to activate Cure Flora's Mode Elegant (Episode 1).

Princess Perfume (プリンセスパフューム Purinsesu Pafu~yūmu)
Debut: Episode 1
Merchandise Date Sale: January 31st, 2015
The Cure's transformation device. It is shaped as a perfume bottle that allows the girls to transform once they inserted their respective Dress Up Key while saying "Pretty Cure, Princess Engage!" (プリキュアプリンセスエンゲージ！  Purikyua Purinsesu Engēji!), and spraying once for their theme line surrounding, three times in their hand, leg and body, and once again for tiara to change their hairstyle. By exchange into Mode Elegant after shouting "Exchange, Mode Elegant!" (エクスチェンジ、モードエレガント！  Ekusuchenji, Mōdo Ereganto!) and spraying it once to skirt, it is capable to launch their first basic attack.

Dress Up Key (ドレスアップキー Doresu Appu Kī)
Debut: Episode 1
Merchandise Date Sale: January 31st, 2015 (Transformation & Golden [Promotion only]), April 18th, 2015 (Elegant), May 30th, 2015 (Miracle), July 18th, 2015 (Scarlet), September 12th, 2015 (Premium & Halloween [Promotion only]), November 7th, 2015 (Royal)
The season's main collectible items, which the Cures can also use to transform and attack. Once all Dress Up Keys are collected, the Gate of Dreams will be able to be opened so the Pretty Cure can protect people's dreams. Power of dreams dwells within the keys. DysDark probably wanted Dress Up Key to destroy them afterwards, like what Close wishes in Episode 2 to prevent any more resurrection of Pretty Cures. There are so far 12 total with 9 more to collect before DysDark does, and collecting all 12 will unleashes their true powers to open the Gate of Dreams, with the help of Grand Princess, but raised to 16 with Cure Scarlet's appearance and later 17 by Royal Dress Up Key. Each are individual divided into 4 categories: Transformation, Elegant, Miracle, and Premium. Those 17 keys later combined into the Golden Dress Up Key (Original Dress Up Key in merchandise).

After the final battle, the Golden Dress Up Key un-merged, detransforming the Grand Princess and the normal keys are being sealed by the keyblades of the keys closed and lose it brightness. The keys, perfumes and weapons are later placed again in the Hope Kingdom's chamber, disabling the chance for ever return to Earth and Hope Kingdom. However in the Episode 50's epilogue, the adult Cures gained the transparent version of their Transformation Dress Up Key born from their heart and monologue explains their reunion might be close.

Princess Lesson Pad as the stairs into Grand Princess (Episode 6).

Princess Lesson Pad (プリンセスレッスンパッド Purinsesu Ressun Paddo)
Debut: Episode 6
Merchandise Date Sale: March 21st, 2015
Guarded by Princess Bag, this one is Hope Kingdom's legendary treasure that only princesses can use. Spinning the heart mark with a pen will summon Miss Shamour to start princess lessons. Also it can be used to communicate with Prince Kanata, although the interference could occur thanks to Dyspear.

 Cure Twinkle with her Crystal Princess Rod post-Meteor Humming (Episode 17).

Crystal Princess Rod (クリスタルプリンセスロッド Kurisutaru Purinsesu Roddo)
Debut: Episode 10
Merchandise Date Sale: April 18th, 2015
The Cures' main weapon. The rods allow the Cures to use different Dress Up Keys to power up, launching their second and third basic attack without expanding their skirt into dress. After exchange their dress with similar as Mode Elegant but with some updated details depending on which Dress-Up Key they use, they use it to launch their group attack.

Cure Scarlet meeting Scarlet Violin for the first time (Episode 22).

Scarlet Violin (スカーレットバイオリン Sukāretto Baiorin)
Debut: Episode 22
Merchandise Date Sale: July 18th, 2015 (Normal and DX [plus Scarlet's Transformation and Elegant Dress Up Key])
Cure Scarlet's main weapon born from Kanata's violin Puff brought after Scarlet's debut. Inserting Dress Up Key will be capable to launch her basic attack after playing it as a violin for a bit.

Music Princess Palace in the Movie.

Music Princess Palace (ミュージックプリンセスパレス Myūjikku Purinsesu Paresu)
Debut: Episode 30
Merchandise Date Sale: September 12th, 2015 (Palace), November 7th, 2015 (Royal & DX [Palace+Royal])
Or shortened as 'Princess Palace' in the anime, this is the mid-season upgrade item of GoPri created from Hope Kingdom's castle after becoming Zetsuborg through Princess Pretty Cure's will to not lose causing Premium Dress Up Key to shine and all 16 keys to gather. Inserting the said type of key and spinning the handle will transform the user into Premium Mode Elegant and launching Eclat Espoir to the foe. Inserting the Royal Dress Up Key will changing the user into Mode Elegant Royal and performing Grand Plantin. The fourth basic attack can be used by just inserting single Premium Key. And not only that, inserting all 4 Keys of each type will restoring the castle respective on their element, thus recovering the Hope Kingdom one by one.