10 Hour Layover at Haneda

What are some options for a long layover through Haneda. I arrive at 06:00 (assuming no flight delays). I've been to Tokyo before so I am looking for other ideas. I'd rather not be stuck in the airport for that long.

Takes 35 to 60 minutes by train down to Yokohama if you haven't checked it out.

There's enough time to head into town on the monorail and have a look around one Yamanote line area without much stress. I don't think I'd go all the way to Yokohama personally. Actually if it were me I'd probably just walk from Hamamatsu to Hamarikyu and enjoy the garden for a bit, followed by something to eat around Shiodome/Shinbashi, then back to the airport.

If you donft want to venture very far from Haneda, therefs a hot spring bathing facility and an aquarium both close to Omorikaigan Station on the Keikyu line.
https://www.heiwajima-onsen.jp/en/
https://www.aquarium.gr.jp/

The bathing complex is open 24/7. I have never been there but Ifve been to the aquarium (called the Shinagawa Aquarium but not to be confused with the JR Shinagawa Station area), which is small but I liked it okay.

Kawasaki Station (Keikyu and JR) has a fairly large shopping mall (LaZona) plus a station shopping complex (Atre) with a lot of shops, and an underground shopping complex called Azalea (check out gGourmesseh if youfre hungry), plus a pretty good Daiso 100-yen shop in the Mores complex across the street. (Therefs also a Daiso in LaZone, but I think the one in the Mores complex is more fun.) A few more shops including a good supermarket are in the Le Front complex adjacent to the station. Most shops wonft open until 10 although the supermarket opens at 9. The nice thing about Kawasaki is that if itfs raining you can go everywhere without getting wet; itfs all connected. You can get a lot of exercise strolling around and although youfre not going to want to buy a lot of stuff itfs kind of fun to poke around, and you can find plenty of interesting things that are small, if you have any space in your carry-on. And there are a bazillion cafes and restaurants.