TTS, It allows you to output what is written aloud. You should these steps:
sudo apt install espeakusage:
espeak "Text will be converted to speech."if you want more details, you may review:
espeak --helpgnustep-gui-runtime
freetts
festival
speech-dispatcher
svox-pico
Others
google_speech
nanotts
Finally, you can remotely connect to a device of your brother/sister with termux and ask him to fetch water. 😁