Just create space that's child-sized and functional for your little one. Tasks such as washing the vegetables in a large basin or shredding the lettuce for the salad will help to make your child feel like a contributing member of the household. Set up spooning and transferring activities for moving uncooked rice or beans from one bowl to the next. Try dulling a carrot peeler with an emory board for peeling a large candle. Once this is mastered give your chid a carrot to peel.
Toddlers love water activites.
One of the activities that is a big hit in my classroom is a small basin containing a small rubber shark with a large open mouth in which the child can transfer things into. You can place smaller fish into the basin to feed into the shark's mouth.