The lady in the picture with the pink shirt is Heleen. She has limited mobility. Her service dog manages many of her daily tasks.
Heleen owns a lamp with a floor switch. Neither she nor the dog can operate it easily. So some of her friends built a solution: a huge light switch. You can find a basic description of it in English at Instructables or a lengthy description in German here. They used a laser cutter to make the wood components. There's a concrete block in the bottom to prevent it from tipping over.
Now when Heleen needs to turn on or off the light, she says, "Veritas" and the dog will tap the on/off lever.