Philips Dreamstation CPAP hose cap

When removing the nose piece from the Philips Dreamstation CPAP in the morning for cleaning I don't like the hole to be open the whole day as bugs might crawl into the hose.

So I created a simple hose cap for this which fits where the nose piece goes, it clicks in-place just as the nose piece!

*Update: I have changed the dimensions slightly so the cap fits easier (v3).