Cats in order:
Bug Collector (common)
Racer (common)
Groomer (rare)
Athlete (rare)
Dino Wrangler (epic)
Architect (epic)
Stylist (legendary)
Decorations in order:
(couldn't find coin costs)
Red Slide (common, unlock needs 2 water, 1 fire)
Mini Bridge (common, unlock needs 2 water, 1 fire)
Rope Ladder (rare, unlock needs 3 waterstone, 2 fire)
Sand Square (rare, unlock needs 3 waterstone, 2 fire)
Kids Outpost (epic, unlock needs 2 elementstone, 2 firestone)
Friendly Tower (epic, unlock needs 6 water, 5 fire)
Sunshine Game (legendary, unlock needs 4 waterstone, 3 fire, 2 necklace)
Supplies: Rock (see corner of completed room picture)
Food: Juice Box (1 heart is standard worth, 2 hearts is bonus worth)
Room catalogue: