I have a retro glitter lamp which I really like. Some of the fluid has dissipated though, so it could need a little refill. But apparently it’s not very easy. Have to get the balance right between water and calcium chloride, use distilled water and whatnot.
I wouldn’t feel guilty about it if you have a fair reason to use electricity.
Did you know that two thirds of the power for light bulbs generate heat? For example a 60w light bulb generates approximately 40w heat. So if you need to heat your apartment it’s not really much of a overconsumption.