After your kids are asleep, Alexa can help you doze off with the Ambient Noise skill and its companion skills. There are several different sounds to choose from, all of which come with their own skill. You can fall asleep to the sounds of a thunderstorm, rain, ocean, wind chimes, babbling brook, rain on a tent, city sounds and much more. For all available sounds, just say, "Alexa, ask Ambient Noise for a list."
Starbucks lets you place an order using Alexa with the Starbucks Reorder skill. After you enable the skill, you will need to link your account. The skill will not work unless you've previously placed a mobile order with the Starbucks app on Android or iOS. It can place an order at one of the last 10 Starbucks locations you've visited in person. You can also check your account balance and switch between your five previous mobile orders.
If you want to do some casual research for a future trip, you can get fare estimates using the Kayak skill. You can say, "Alexa, ask Kayak where I can go for $400" or "Alexa, ask Kayak how much it costs to fly from Los Angeles to Dublin." The skill will ask for additional information and eventually provide you with a series of options and price ranges.