Here's what I do:
1. Open dust bags and tell each girl how pretty they are and that they are a good bag and a pretty bag.
2. Finally make an selection
3. Remove the selected bag from the dustbag. Hug her.
4. Lay the newly selected bag on the bed.
5. Take previously carried bag. Hug her.
6. Dump everything out of the bag onto the bed.
7. Tuck that bag into her dustbag. Kiss her goodnight.
8. Stare in shock at number of gum wrappers and receipts.
9. Throw away gum wrappers and receipts.
10. Put non-trash items into newly selected bag.
11. Hug bag.