For those who are looking for Expansion Permit droppers (like me) I would definitely recommend the Spring Goat.
I have had 6 of them since the Magic Garden event last year and they regularly drop some EP every 8 hours (like 2-3 EP per week)
I now have 8 Spring Goats

Spring Goat - (Card)
Storable: Yes
Info: A normally ornery goat that seems to be tamed... Just watch out for the horns, maybe!
Type: Decoration
Source: Event
Class: Animals
Crafted In: Garden Shed
Size: 1x1
Requirements: On sale for only 100 Gems // 135 Garden Token, 3 Simple Glue, 15 Glimmerdust
Sell: Item cannot be sold!
Drops: Earth Wisp, Elvenite, Expansion Permit, Silky Fur, Wisp Lantern
Events: Ivy's Magic Garden - May 2021
Production: 25 minutes
Production Speed-up: 2 Gems
Collection: 480 minutes // 8 hours
Collection Speed-up: 32 Gems
Cap: 10
Link: https://forums.storm8.com/showthread.php?112231

Golden nugget lovers would be very happy with the Garden Peacock for only 83 gems! This is a bargain

Garden Peacock - (Card)
Storable: Yes
Info: A stunning and rare peacock! Drops various crafting materials and has a chance to drop Golden Nuggets, Golden Apples, and Golden Eggs.
Type: Decoration
Source: Event
Class: Animals
Size: 1x1
Requirements: On sale for only 83 Gems
Drops: Coins (75), Golden Nugget, Golden Apple, Golden Egg, Eggs, Roast Chicken, Jewels, Pile of Seeds, Glimmerdust
Events: Freshening up with Florals - May 2018, Spring Sales - May 2019, Summer Sales - August 2020
Collection: 720 minutes // 12 hours
Collection Speed-up: 48 Gems
Link: https://forums.storm8.com/showthread.php?104334

He gave me 2 in a raw since I bought mine 2 days ago!