P/C>On Gach stuff

Most of those things are less than 50m. I'd say your 1 year bunny buddy buggy coupon is worth the most, I'd guess 300m or so.
I'll p/c the chairs for you because, hey, I like chairs so:

Chairs:
Moon and Star Cushion-75m
Tea Time Chair-20m
Sleepy Bird Chair-20m
Dragon Chair (Inferno)-50~100m
Mochi Ice Cream Chair-20m
The Porcelain Throne-15m
Giant HP Bottle- 50~100m
Halloween Pumpkin Chair-1~5m
Bunny Chair-30m
Tropical Cooler Chair-30~40m
Red Round Chair-100~150m
Teddy Bear Bed- 75~100m
Skull Throne- 30~35m
Mysterious Power Elixir Chair-60m
Skin Empress Chair-20~35m
Dragon Skull Chair-30~50m
Arkarium Storytime Chair-20~40m
Furnace-50m
Gold Seal Cushion-100m
Stork Swing- None in fm atm, I'd guess 50~100m
Igloo- 150~200m

Ten-Chair Bag-30~50m