R.D.
Make yourself lists (handwritten, not mental) of all the stuff you've got to get done and lists of the things you have to pack. If the kids or your husbands home now, call them and ask them to knock out 'x, y, and z' before you get home, and to please leave it out on the bed so all you have to do it check it and pack it.
Is there any way you could leave an hour or two early today? Skip your lunch break and leave early?