Of course I coudn´t let it like it was.
The China lamp went into this one:
Unmodified it has a bulb lamp and 2 AA batteries, now it has 3 ultrabright leds with focussing triple reflector and 3 AAA rechargeable batteries.
I connected the momentary button of the projector to the battery holder and got a very nice holo projector:
Much better like this.