When my kid was 5, we already expected him to
get ready for the day (get dressed, wash face and hands, brush teeth),
get ready for school (check school bag for folder, papers, lunch, turn off lights in his room/bathroom),
help set the table, help clear the table,
put things away when he takes them out (toys, books, playdoh, arts and crafts stuff),
get ready for bed (shower, clothes in laundry basket, hang up towel, brush teeth, check for toys/books/supplies left out)
help me w/whatever chore I'm doing that day (yardwork - gardening, weeding, watering, helping w/burn pile, laundry - folding, pour in the soap, loading washing/dryer, making his bed, cleaning the floors - one of us moves furniture and the other runs the vaccum or vice versa, dusting - we have a few dusters and Swiffer handles).
He has always helped me cook by taking things out of the fridge, helping me slice, peel and chop things
I let him rinse the dishes on occassion if he wants to help w/the dishes
Besides my household work and cooking, everything probably takes 5 mins for him - the rest about 30 if I'm lucky to keep his attention that long. So don't worry, I'm not a slave driver - he gets PULENTEE of time to play.
hth