If you have 2-3 hours to spend in Elmbridge, here are some suggestions:
1. Visit the Painshill Park - It's a large park with lakes, woodland, and follies. It will take around 1-2 hours to explore the park, depending on how much walking you do.
2. Explore the Cobham Conservation Area - You can walk around Cobham village and see some beautiful historic buildings. You can also visit the Cobham Mill, which is a restored watermill. This will take approximately 1-2 hours depending on how much you explore.
3. Shop at The Heart of Walton - The Heart of Walton is a shopping centre which has a range of shops and restaurants. You can spend around an hour here shopping or having lunch.
4. Visit the Walton-on-Thames Market - Walton-on-Thames has a market that operates on Saturdays. You can explore the market for around 1 hour and enjoy the various stalls that sell different products.
Overall, there are different options to choose from that you can explore within Elmbridge in a few hours.