Pluggable tea light candle, customizable text

I was looking for a tea light that could be sent in an envelope as a kind of Christmas greeting card. There are a lot of tea lights here, but I haven't found one that folds or is pluggable. So I thought about how it could work, that the parts could be sent inexpensively in a bubble envelope.

And here comes my tea light. It is designed for printing with two colours with a dual extruder or multi-material, but can also be printed with one colour and the text as a hole. By the way, it seems that the file doesn't work properly in Customizer. I recommend to download the file and edit it locally.
For multi material, you have to do two exports, one with "what_to_print" set to "text", and one with "what_to_print" set to "rest". If you print only with one color, set the "fontthickness" higher as the "windowthickness" and export only the "rest".

Hint: You can print this also with two colors, even if you have only a single extruder.

• export both files, text and rest, as you would do for multi material print
• start with the text file. Load it into your slicer, but do not move the object on the print plate.
• print the text
• remove all from the print bed but the text (for example skirt and prime)
• change the filament
• now load the rest file into your slicer
• print the rest. For Prusa MK2/3, bed leveling should work also with this first layer printed on the bed, because the distance from nozzle to bed is more than 0.2 mm

If this works for you, please let others know, and please post picture of your make.
The assembly is done by the recipient of the gift, isn't it?