Play Day
Food
You can always incorporate food into sexual activities. If mingling food and sex squicks you that’s, fine, just don’t forego eating. Low blood sugar can make you cranky, depressed, and/or anxious. Keep your meals reasonably light so you don’t get bloated or sleepy and so you don’t get cramps during sex (much like the eating and swimming rule). Try to incorporate aphrodisiac foods, but unless food is the main theme for your sex day, don’t let the preparations take over the day. I discourage chemical laden foods, too, such as those containing MSG, because they make me feel sluggish and generally crappy. Even if you’re not aware of it, they probably make you feel that way too to some extent. Also, avoid excessive sugar due to the crash and irritability.
A little bit of protein, like meats and cheese, and a little bit of fruit, seem to work really well to snack on throughout the day.
Mini Spa
A little self-care can go a long way. You don’t have to go to a spa. You can do this for yourself at home. Just a little pampering can do worlds for you, or you can take it as far as you like. This can be done the morning of your play day or the night before. What I like to do is a coffee scrub, complete shave, full-body coconut oil (unless I choose to wait and have my lover do that part later), followed a glass of wine with a half hour of journaling with some good music, candles, and incense.
The Activities
This is really a matter of personal preference. All day sex does not mean that you have to do nothing but have sex all day. For most of us, that would be very unrealistic and probably result in some serious injuries. Anything can work. It really all depends on your attitude. All kinds of everyday activities can carry more than a little hint of sexual tension. Focusing your attention on your partner throughout the day can be enough to keep the sexual energy high. You could play board games, watch movies, cook, whatever, and keep that energy going.
Clothing
What you wear matters! That doesn’t mean it has to be all your sexy gear all day. You may feel more inclined to arousal wearing something comfortable. On the other hand, some of us get more and more turned on by wearing restrictive, sexy clothing. If your house is comfortable enough you may prefer the all-nude day.
Reading and other enhancements
For some, the play day is enhanced by some personal time. A little reading indulgence can help you relax. Maybe one of you enjoys porn and the other doesn’t. Don’t be afraid to make room for individual activities that foster arousal, just don’t let them become so much of the day that they take away from what you enjoy together.