ᐅ Key Features in New Construction?

Hello, our construction started last week.
Have you planned any interesting features that are cost-effective?

For example, we have:
a wood-burning fireplace with water heating
a peephole with a monitor at the front door
bathroom and guest toilet doors without keys, but with this turn-lock
a built-in shelf in the shower
a retractable power strip in the kitchen

Do you have any other suggestions?

Recessed spotlights in the stairway to provide indirect lighting for the stairs.
Possibly power outlets in the window recess for future decorative lighting in the window.
Several outdoor power outlets and two outdoor water taps (one at the back of the house and one at the front).
Electric roller shutters with controls.
Sensors on the windows to detect whether the windows are open or closed.

Down in the off-topic section, there is a similar post. A lot has already been discussed there.

Manu1976 schrieb:
There is a similar post down in the chat corner. A lot has already been written there.

Where can I find the chat corner?!

I want to emphasize that some of the items mentioned here are anything but inexpensive.