Summary

UPDATE: The design is improved. Use doubler v3.stl.

For people who love iPhone SE, love the home button, but feel sorry for fewer choices of the case nowadays.

Don't worry, be happy.

It makes an iPhone five fits into an iPhone ten case, so it is called a DOUBLER. (Another name candidate, the SE-X converter, was rejected ;-).)
It makes your iPhone SE greater in some sense.
I am sorry I could not double the screen and the price, but enjoy our SE life!

If you want to edit and modify, visit tinkercad: https://www.tinkercad.com/things/bTKItDc6xBS-iphone5-doubler

Mashed up the following data. Thank you.
https://www.thingiverse.com/thing:2668699
https://www.thingiverse.com/thing:30471