Small Voltmeter Enclosure

I recently bought two small voltmeters (like this one: https://www.aliexpress.com/item/DC-12V-W1209-Digital-Voltmeter-Cool-Heat-Temp-Thermostat-Thermometer-Temperature-Controller-Temperatural-Instruments-S018Y/32818841868.html) which are basically a bare PCB with 2 leads and the 7 segment display. When using the displays I always feared to create a short on the open PCB by some other things on my desk.

So I designed a simple enclosure for the LCD display. You need some glue between the top p