Internet of Things (IoT) integrates physical devices and creates opportunities for people to interact with the surrounding environment. While a number of blocks-based approaches exist for programming some hardware, such as Snap! for Arduino, Microblocks, and Scratch extensions, this is still an underexplored area. In this paper, we propose a block-based programming approach using MIT App Inventor to enable novices be able to build mobile apps integrated with IoT technology. We also review other block languages applied for IoT. We conclude with some thoughts on how blocks languages might inspire people to create with IoT.