A different way to per-site Multisite in MU Plugins.
A quick bit of code and a question about where you like settings.
I use CPTs on three of my 15 WordPress sites. I never put them in my theme’s function if I can help it.
I use surprisingly few child themes these days, because most of what I want to do can be done in widgets, css, or a mu-plugin.
A short-code to display recent videos posted to a CPT on my site. Can be easily extended.