One thing I have been doing over the summer is making #2 son's first layout. Quite refreshing bunging down set track!
It started as a 1st and 2nd rad loop set across the corners of two 2x4 boards using my now familiar dowels and toggle clamps. Power transferred from one board to another via the clamps.
Santa is bringing him a centre board with turntable and engine shed
So he can still have the simple 2 boards for a quick play or all three on a weekend (and Dad has a test track at last lol)