I think there are various noise issues that have different solutions (if any):
Engine noise - apply sound dampening around the doghouse, under the dash, around the wheel wells, etc.
House rattling - tires properly inflated will help with this. Have someone ride in the back while you drive a beat up road. As they hear a rattle, have them put some masking tape at the source. Then you can explore the area when you stop and look for the culprit and what might be done to eliminate the rattle.
Stove/oven - that can be a big noise maker. Getting some felt pieces and putting them between the oven racks and wall, stove and lid, and stove and burners can minimize the noise - just remember to remove them before using the stove or oven. You might try a silicone mat - one made for cooking - and cut that up to use instead of felt. That would be less dangerous if you did forget to remove them first.
Cabinet doors - some adhesive felt pieces attached to the inside of the doors where they meet the cabinet can help reduce the noise. Even if they don't open, there is often enough of a gap that the doors repeatedly hit the cabinet as you go.