The table below lists the categories and some example objects that are in them:

Category
Examples  
Category
Examples
System
Hand  
Button
Elevator call button
Nature
Waterfalls, waves and torches  
Good plant
Tomato plant, nut plant
Creature Eggs
Norn, Grendel and Ettin eggs  
Processed food
Cheese, honey
Food vendor
Cheese dispenser  
Drinks
Water pump, water fountain
Implements
Seed launchers, doors and pick-ups  
Detritus
Mouldy food
Medicines
Pill bottles and other medicines  
Toys
Balls, toy car, toy dog
Weather
Clouds, rain and snow  
Bad plant
Cactus, puff-ball
Animal house
Ants nests, bee hives.  
Dangerous bug
Ants, bees, gnats
Harmless bug
Caterpillars, butterflies, snails  
Dangerous critter
Bats, crabs
Harmless critter
Fish,chameleons, rabbits  
Seeds
Cactus seeds, triffid seeds, etc.
Roots
Carrots, potatoes  
Flowers
Spyro, Pear plant
Fruits and berries
Pear fruit, arnica berries  
Vehicles
Submarine
Up/Down movers
Elevators  
Computers
Learning machines
A/V Equipment
Gadgets such as clock and calendar  
Left/Right movers
Dingy, rowing boat
Incubators
Incubator  
Teleporters
Teleporters and other magic devices
Machinery
Large machinery such as gene machine