Just add a button and call a service, see How can I execute an automation from a Lovelace button?. Mine looks like
type: vertical-stack
cards:
- type: entity
entity: input_text.swa_alexa_text
- type: button
tap_action:
action: call-service
service: automation.trigger
service_data:
entity_id: automation.alexa_media_player_tts_announce_from_lovelace_ui
show_icon: true
show_name: false
show_state: false
I’m not too happy with the result, yet. The button is just a rectangle that can be pressed, not yet an icon…