I have come round to admitting defeat a bit and not beating myself up about the fact that I look and feel crappy on my period...some of itis psychological, I think, and it helps to remind myself of that when I look in the mirror and go 'urgh!' 
small things that help for me:
Bubble baths every night.
I give myself a face massage with rose facial oil at night after cleansing. Rose is very soothing to the nervous system, and my skin drinks it up.
I drink loads more fluids - water, herbal tea, juice - as my period tends to dehydrate me, adding to shite skin and low mood.
Cold cucumber or other cooling eye mask for 5 mins in the morning to combat puffy, tired eyes.
Berocca or other fizzy vitamin drink in the mornings after brekkie.
Treats of any kind - nice food, good films, favourite music, Manicure, massage, early night etc