Oooh - I love the scavenger hunt idea!
I think growing independence means greater responsibility, but instead of seeing responsibility as a burden, it's great when tweens and teens can see it as an opportunity and a rite of passage. They start to take on some new responsibilities, not just to get the job done, but to feel confident and proud.
Maybe choose from the following:
- put dinner in a crockpot (hard to screw up, won't set the house on fire, prep the ingredients the night before but let the kid use the can opener on the chicken broth and so on)
- do his own laundry. You should start moving in this direction anyway, thinking of what kids need to do in college. Start now, now when he's 17. Post a list of instructions above the washer and let him follow them.
- pick one area of the house that bugs the hell out of him, and let him put his own stamp on it. That means you need to let go, though, and be content and completely uncritical with what he does! Maybe it's the linen closet, maybe it's the tool collection in the garage that needs to be put on a pegboard, maybe it's the huge cabinet of plastic ware that has mismatched lids and containers.
- develop 1 or 2 changes in the family menu - research recipes on line (allrecipes.com is a decent one, so is Rachael Ray with her 5-ingredients-or-less ideas).
- Find a charitable project. He's going to need something in high school anyway as a college prep or even job interview idea. What interests him? Food drive for the local food pantry? (Don't do that now, as many organizations do, but get him ready to start in January or February when the "holiday" drives are done and people are still hungry). Does he love animals? What about those adorable and easy dog/cat bed things that are made from old sweaters and flannel shirts, stuffed with polyfil stuffing or old bedding/towels? What about organizing a neighborhood collection for the local human society? A textile recycling drive? Don't reinvent the wheel - just spread awareness among the neighbors for existing projects in your community.
- start to figure out jobs for vacations/after school/summers? My son developed a business, starting with vacation coverage for mail/packages/trash and pet care (walking dogs and cleaning litter boxes), raking leaves (progressing to mowing lawns), helping people clean out garages and get ready for yard sales, and so on. Start small, develop a flyer, distribute to neighbors, and then build with more experience. Lay the groundwork for what he needs to do at 12, 13, 14, 15...before he can get a "real" job. My son used this to build a 7-year in-home business and it looked great on his college applications. It's important to make him communicate with neighbors - don't do it for him. Just help him pick people who would be good starting points. Help him develop a businesslike but fun approach. This is a computer project but with a purpose.