Chiang Mai to Chiang Rai

Leave Chiang Mai in the morning for your first stop : Bo Sang umbrella village.
There you can buy some umbrellas and also check how they're made.
Then you can head to Take a Walk cafe, it's a replica of the hobbit house of Lord of the Rings.
After the cafe, head to Mae Kampong village and spend the night here. There's a great hotel called Lanna Wild, it's luxury and often fully booked, so make sure to book in advance. There are many other options from any price in Mae Kampong.
There you can visit the village, have some food in the giant restaurant in the tree, and visit the temple near the river.