Each day the dungeon gives a different toy frame, needed to make a mini pet, but not enough of the other ingredients to make one. Takes 3 dungeons, once a day for 3 days, to get enough to make one mini. Fourth and fifth days will give enough to make a second mini. Each day the minis are added to the gem store. So if you really want all five you can forge 2 and buy 3.
The Grove: Ventari Frame
Divinity's Reach: Princess Doll Frame
The Black Citadel: Toy Soldier Frame
Hoelbrak: Plush Griffon Frame?
Rata Sum: Toy Golem Frame?
If you miss any one the will all be available starting the 20th in Lion's Arch.
Hoelbrak and Rata Sum toys are my guesses based on the slots in the bank.
I just forged Ventari. I took extra wading. Tomorrow I will take glue. After Wednesdays dungeon run I'll be able to forge another mini.