The Puffy now has a mini.

https://backpack.tf/item/7282409386

Sale) Sold for 230 Keys + Eldritch Opening Puffy Polar (73.5 Keys) + Haunted Ghosts Chullo (70 Keys) + Ancient Eldritch Smokey (21 Keys) + Starstorm Slumber Wet Works (20 Keys) + Omniscient Orb Brass Bucket (13.5 Keys) + Roaring Rockets Zoomin' Broom (7 Keys)

https://backpack.tf/profiles/76561198150783829#!/compare/1556755200/1556841600

https://backpack.tf/profiles/76561198038637602#!/compare/1556668800/1556755200

230 + 73.5 + 70 + 21 + 20 + 13.5 + 7 = 435 Keys

Puffy Mini

https://backpack.tf/suggestion/5d154c7867807272880d9534 - 73.5 Keys

Wet Works Mini

https://backpack.tf/suggestion/5d15559b678072786f45f3de - 20 Keys

Bucket Mini

https://backpack.tf/suggestion/5d1a6fdd678072241a617a01 - 13.5 Keys