There are a lot of excursions that run from here including the Jeep safaris, Mount Tiede Tours, Whale watching and if all that's not enough you could hire a car and go for the day exploring.
There are also places to visit nearby, such as the main water park at the resort of Playa de las Americas, Octopus Aqua Park. The other one on the island isn't far either in Adeje.
There are also Zoos, Gardens, Golf clubs, Whale watching and Dolphin watching, go-karting, fishing and lost of water sports. So you will never be stuck for anything to do! Most are either a free bus ride or short taxi ride if you cannot drive or do not want to hire a car.