Tacking a box onto a wall is a horrible solution. You'd need two or three long tacks, a light candle, and I'd probably put the tacks in at an angle, too. And th

Tacking a box onto a wall is a horrible solution. You'd need two or three long tacks, a light candle, and I'd probably put the tacks in at an angle, too. And then you'd need to solve the problem of the falling candle. I'm not sure what would be a good solution, since the candle would need to be placed at least 5cm away from the wall, and there just aren't materials for that.