Tours to the elephants, cooking class, rafting, .... Ask me for recommendations. For some organisations i will get commission if i book for you, in which case i will give you a 10% discount on their published prices.
Few examples
MAE RIM Sanctuary - for bathing with the elephants, feeding, touching
ELEPHANT NATURE PARK - for hands off experience, only observing the elephants
SMILE ORGANIC FARM - cooking class, pickup around 3pm, go the local market, make some salads, curries and so on, vegetarian option available
CHIANG RAI - full day 3 temples
DOI INTHANON - go visit the highest peak in Thailand, with a 2 hour trek - full day
DOI SUTHEP/WAT UMONG - evening temple tour, pick up at 5pm