Yes James River Equipment is the answer. Took my kid there so many times during the height of Covid when everything was closed. You can just walk in and browse the vehicles on their massive lot and potentially even sit in the cabs of some of them. Never had an issue but also never went there when it was busy, and always made sure to stay very clear of any of the moving vehicles

Went last summer. Well worth it! As an adult I even enjoyed operating the backhoe

Just went to the holiday model train exhibit at the Science Museum today (I think today is the last day). Amazing for kids and adults alike, tons of cool panoramas. Went early in the morning and now it’s pretty crowded, but totally worth it. Especially on this rainy day!