So my boys are 6. In order to earn some technology time on the weekend (around 30 min in morning, 30 in the afternoon on both Sat and Sun) they have to do what they are asked when they are asked.
We got home from school 30 mins ago and so far ds1 has cleaned all of dd's toys she had been playing with and scattered everywhere. ds2 has helped me sweep and pick up random things off the floor. In about 5 minutes I'm going to take them both into the bathroom and give them 'what for' for whoever it was not letting the bath water out last night. Went in to clean the bath today and found it still full. I thought 'bugger it- I'm not going to pull that plug- they can and then they can help me clean it and see what a PITA that is'.
They are also asked to take rubbish out to the big bins, tidy their rooms, pick up the toys off the lawn and occasionally help put away clean dishes.
They don't have a lot asked of them, but the rule is that they MUST do it when it is asked without complaining, otherwise no technology time.
Would this work for you OP?