Macworld Smartening up your house can sometimes be as easy as adding some Kasa Smart Plugs, especially when a four-pack is just $36 at Amazon, down from its usual $50. This deal is a fantastic opportunity to get some really cool smart outlets that integrate seamlessly with Siri and the Apple ecosystem, as well as with Alexa or Google Assistant. As mentioned, these compact smart plugs are fully compatible with Apple HomeKit, which means you can ask Siri to control them for you. Plug one of these in your living room and the lamp in it, or put one in the kitchen and plug the coffee machine in it,…