DISCLAIMER: this is still an electrical unit that warms the wax with a 25 watt lightbulb, so the unit does get warm. Before selecting various items to showcase between the glass panes, remember not to choose anything that could get too hot and shatter the glass. We certainly want to remain the safe alternative to wicked candles. Also if you personally choose to fill it with non-Scentsy items that cause damage to the warmer it will void our warranty. So have fun; be creative; just be wise with what materials you place between the glass.