A gift certificate to a place like Bed Bath & Beyond would be great - they cover everything from the kitchen to the bathroom to bedroom to personal items.
But if you want to purchase an item instead of a gift certificate, how about:
*towels and washclothes
*pretty pillows for her bed
*bed linens
*a small vacuum cleaner (you can get them as low as $30 at WalMart)
*wall clock
*alarm clock