A kid scavenger hunt has nothing to do with business, right? But if your client is spending time at home with the kids and is still at work during that time maybe this is not so much a stretch.
If you are able to provide a tool that can be used to keep the kids active then maybe it is a “thank you for your business” gift. Not all gifts need to have a monetary gain or cost a lot.
This kid scavenger hunt is a photo hunt that has the parameters built around the house and yard. Check it out below. It is designed for 8 years and up. The only rules are that you are to have fun taking your favorite photos and check them off the list as you complete the quests.