I want to specify that mundane might be super mundane. My kids (1,5 years) absolutely love 1. emptying washing machine 2. emptying laundry 3. picking up toys to a box when cleaning 4. peeling potatoes with me. They will give me potatoes, I peel them, and they'll taste the raw potatoes and put them to a container.

This surely takes more time than doing the tasks alone, but this way is much more fun.