Take care of household or car repairs. If you've been putting these off, make that upgrade, such as air conditioning, a driveway, or a patio, particularly if you are fairly certain you will maintain and live in the residence at settlement. If you currently have an old vehicle and can afford to upgrade your set of wheels, do so. You'll need transportation, and as long as the expenditure is modest, you won't be faulted for a new (or slightly used) car. Indeed, if there is a manufacturer's warranty, you'll save money in years to come.
Look after your health-care needs. Visit your doctor for a routine checkup, annual OB/GYN exam, vision testing, or dental cleaning and x-rays. Chances are good your health-care coverage will remain in force for at least several months longer, but you might be responsible for any co-pays or procedures that aren't covered. So see to these visits now, and order any dental work or new glasses or contacts if they would be covered on your health plans.
Invest in a better work wardrobe. I'm not suggesting that you buy out Saks Fifth Avenue, only that you purchase some basics to see you through job interviews and career commitments. Focus on a few good suits and the appropriate accessories. But hey, a new bathing suit could do wonders for the self-esteem as well!
Stock the pantry. This might sound silly, but if funds get tight (and if you're dealing with a belligerent husband, they just might), you won't need to spend as much on groceries if you've stocked the pantry and filled the freezer.