Signs, signs, everywhere signs

Occasionally, Sebastian goes through periods of compulsive writing. This time, it comes in the form of notes from his alter egos to ours, and signs. The signs are all quite welcoming, mostly featuring the phrases "Hello!" and "Come in!" and "Join the fun." This is all very sweet and lovely...
...But my house is becoming plastered in signs. Note the 4 on the door, 3 on the walls and even one on the floor-- and that's just one corner! Far be it from me to stifle the boy's creativity, but I'm drowning in his handiwork.


The signmaker on the job:














Now, it has extended to labelling every instrument in the "drum machine." Where will it end?