Make your main keyboard sleep for a while, for example if you're placing a different one on top, or your kid is banging on it.

keboard_sleep.sh

keyboard_sleep(){
    # xinput -list
    xinput --disable "AT Translated Set 2 keyboard"
    sleep 3600 ; xinput --enable "AT Translated Set 2 keyboard"
}

keyboard_awake(){
    # xinput -list
    xinput --enable "AT Translated Set 2 keyboard"
}