Chores! Part Three- What Chores Can Preschoolers Do?

So what chores can a two-year-old actually do? Three-year-old? Four-year-old? I'll list what ours have done at these ages and you can add yours in the comments, too.
Two
Put dirty clothes in hamper
Fetch diaper and wipes (and lots of other things!)
Fold pajamas in half and put them away
Brush teeth
Pick up toys (provide containers that don't require precise organization)
Clear plate and cup
Three
Dress
Begin to make bed- pull up blankets and "tidy" it (lower your expectations here)
Set table (providing a picture of a set place is helpful)
Wipe up spills
Empty dryer into a laundry basket
Empty lint trap
Fetch bottles and cups (do you find these lying all over your house, too?)
Four
Gather and sort laundry
Use a small canister vacuum
Dust the tv
Pick up outside toys
Fetch the pool towels and bring them inside to be washed
Empty trash
Help empty dishwasher
Fold rags
Five
Put clean clothes away neatly
Clean toilet and wipe down sink with antibacterial wipes
Feed pets
Fetch the mail
Dust
Beginning organization (the Tupperware cupboard is great for this!)
Water plants
Strip bed