Cards
Sensory-friendly hold-up cards
Built to be shown, not decorated. No patterns, no extra words on the face, no red alarms. A pictogram so the card still works if reading is hard.
The pack
Tap a card. Soft field if the room is already loud. Strong field if someone needs to read it from across the room.
Kindred hold-up cards
Soft is gentler on the eyes. Strong is easier to read across a room.