Too many toys...

I have started 3 posts and deleted them all. I never was very good at writing. My struggle lately has been discipline. How do we raise kids today to be respectful to their parents and other adults when we give them everything they want? How do we teach them to be appreciative of the things they have and to take good care of them? Sunday night I was getting ready for work and the house looked like a tornado had hit. Bill had told Brianna quite a few times to pick up her toys and she kept getting distracted. So finally he took a garbage bag and started picking them up and telling her they were going in the trash. This tactic used to work but it didn't this time. She just let him do it. Then I see him heading outside to the trash cans. We normally just put them out in the garage and make her earn them back. I followed him outside because he was carrying off her new toys from Christmas including her $50 Baby Alive doll. I didn't want him to actually throw them away. While I'm trying to convince him to just put them in the garage, out comes Brianna, carrying 2 more dolls(one of them is Alyssa's Baby Alive doll).."You forgot these ones." I was furious. Here I'm trying to save her toys and she's ready to throw more away. I rarely buy toys for the girls except for birthdays and Christmas. How they've accumulated so much, I don't know. We do a clean out of toys around every 6 months or so, I guess I need to do it more. I think I might need to follow my mom's suggestion and put some toys away for 6 months then bring them out and they'll be like new. I am open to other suggestions. Tami and Tif, what do you guys do with 5 kids? I only have 2 and it's a problem. I better get going, time to pack up some toys!