Empty bins - move any recycling bins outside, do the washing up, wipe over surfaces. Put away utensil pots, tea towels, spice racks, knife holders. Don't be suprised to find random things in the dishwasher / oven / cupboards - so many times people would "stage" their homes and it just looked wrong. I used to carry a box of props - matching towels, aspirational coffee maker, educational toys.
Your EA is not there to tidy your house & they are likely to take more care if they haven't had to spend 20 minutes clearing up your breakfast items - early morning is usually the best time to take photos. It bugged me if they left the dirty dishes on the side or the recycling caddy overflowing.
Make sure any of the built in features of your house are used for the purpose they are designed for. Eg if you have a built in wine rack fill it with wine bottles (screw top empties work in a photo but will need to be changed for viewings). We use our wine rack to keep gloves & hats in....
Let your EA know when the sun is in the kitchen, garden, living room.
Clean the house - did I mention that before. It was amazing how many people didn't bother. Including the windows - it lets in a lot more light when they are freshly cleaned.
If your kids room is obviously a kids room - use their best looking ( not favourite) teddy as a prop on the bed.
Get rid of any evidence that you are a pet lover or have pets..... even the photo of you and stinky dog on a beach holiday.
A good EA will move stuff about your house to get the best photos - you may find things out of place when you get home. This is a good sign - not them snooping, just making sure the bright cloured knick nack is not too distracting in a photo.
Leave your EA alone to do the photos - it is diifficult to move a prized gurning graduation photo if the proud parent is hovering. And do not say you are going out and "surprise" the EA by popping out of the bathroom / study/ bedroom....