I think you need to decide if the mirror is for primping, or just for a design statement. If you look at many foyer pix, including a couple here, the mirror is practically covered up by a larger floral arrangement directly in front of it. It is not about checking your lipstick. The reason I mention it is because I think the mirror needs to hang on the lower 2/3 of the wall space between the light and the tabletop - and likely that will make it a bit low for some people to use for grooming purposes. I think the box is nice, and can certainly sit in front of the mirror a bit. I think the floral piece is way too casual and rustic for the other pieces in the group, and also disappears as the color of the vase is almost identical (at least in the pix) to the color of the table. I would rather see you find an interesting pair of antique brass or black iron urns to place on either side of the mirror, and fill with taller greenery and branches to add volume on either side of the mirror. The paired urns would also add a more formal feel there. Consider adding a decorative mirror hanger and cording to give the mirror more vertical presence.

Have you tried cornering the two chairs (L-shape)? One on the window side, one on the laundry wall? Give them some space in between. Add some drama in corner like a full plant on an eye catching pedestal. Also need some color, consider interesting picture above the chair on laundry wall. If you have any children's artwork have it custom framed and show it off proudly.

I don't mind the table and mirror and can't really think of anything besides art that would fit on that wall. Can't see the table details well but could it be painted? How about red to match your lovely door? What would say "fresh and cozy" to you for that space? Have you thought of a new light fixture? A runner and a larger rug in the entrance could look good. I don't find the clock visible from the door to be welcoming so I'd be tempted to remove it.

Ikea has several narrow shoe cabinet options on the market, and there are plenty of others out there. Maybe you can find a product with the right dimensions to give you some shoe storage and a drop zone on top, with hooks above if needed. This one with feet would allow clearance over your floor vent. It's a little too deep to fit behind your door, but might work centered on the wall. https://www.ikea.com/us/en/p/hemnes-shoe-cabinet-with-4-compartments-white-60156121/ This one is skinny enough to fit behind the door, but a tad too long to put a pair in the space. https://www.ikea.com/us/en/p/hemnes-shoe-cabinet-with-4-compartments-dark-gray-stained-30381753/ Neither will hold very many adult shoes, but could give you storage for a couple of adult pairs and several children's pairs.