Gracelink.net has a terrific David and Jonathan lesson plan with fun opening activities for Pre-K. The "thumb buddy" game is cute, and the lesson even has room decoration/theme suggestions. Has a nice "cut out and share a friendship arrow" activity at the end too.
I really liked the interactive story reading too....
“Yes, we will be friends [fist on heart] forever!” said David
[raise hands and wiggle fingers].
Here's the link to their free PDF.
https://www.gracelink.net/asse...ER/K-15-Q2-L02-T.pdf
I've recommended Gracelink's videos and lessons before. They are an SDA ministry but do good stuff. Adjust your point of view as needed.