Play specific types of music - e.g. "plays hits from the 90s" or "play relaxing classial music".
Timers and reminders in the kitchen.
Play radio stations.
Play my audiobook (audible).
What's the weather going to be.
Turn the lights on/off (Phillips Hue).
Turn the heat up or down (Nest).
Play thunderstrom sleep sounds to get to sleep.
Turn on specific smart plugs and their associated devices (e.g. "Alexa turn on the electric blanket").
Make announcements through the house on other Alexas ("do you want a cup of tea?").
As bluetooth speakers.
What's the temperature outside? (so I know how to get dressed)
To translate temperatures and measurements to other unit types.
To check the time in other countries where we have friends/family.