Adapters for new 2021 MacBook M1 Pro

 I am making a transition from a 2015 MacBook 13-inch to a 2021 Macbook M1 Pro. The 2015 Macbook pro

has two Thunderbolt 2 ports (up to 20 Gbps) and two USB 3 ports (up to 5 Gbps). I would like to keep using my magic apple mouse and keyboard with have a USB connection. I also have a 2015 Apple Thunderbolt with a thunderbolt 2 connection.

What adapter or adapters would you recommend for me to connect these devises to the new 2021 MacBook pro with boasts Thunderbolt 4 ports?