hot springs
The Tha Pai hot springs are about a 20 minute motorbike ride, after the Pai Canyon on the road to Chiang Mai. There's a 200B/person entrance fee to the national park. There's a free hot spring outside the park gate, but it's 80°C and, for obvious reasons, you aren't allowed to touch it.
elephant antics
For several years now, travellers have enjoyed riding an elephant and concluding the trip with a romp in the Pai River. For this 'adventure', take as little as possible - you'll be enjoyably wet as the elephant is encouraged to shower you. Some operators - and there are several - are willing to take photo's of you while you enjoy the elephant antics in the river.