LED lighting is cheap these days.
If your house is gonna be vacant for a while, consider investing in one of those smart-lighting home automation systems where you can set different rooms to turn on and off at different points in the day. (Kitchen during dinnertime, bedrooms at night, etc.)
My neighbor did that and it fooled me. I rang his doorbell to ask to borrow a pressure washer wand, with no response. Figured he was with family and wasn’t taking any more visitors, but turns out he’s been on vacation for the past four days.
If it's empty, you can cut a hole in the bottom, for example, clean the inside and make some type of lid, to close it again. It's not like anybody will be inspecting it in detail ;)