Mobile soldering iron STC T12 case

I wanted a soldering iron to be used on the field, so battery powered but still with controlled temperature and under 20USD and so bought the STC T12 DIY kit which looks to be ok for the job.
After a bit of searching I couldn't find a case for it that suited my intended use and I went ahead and made one that I think is reasonable ergonomic.

I've used an XT60 connector for the battery powering the iron but you can use other connectors type if they fit the socket and hot glue them in place.