Ten ways to upgrade the MacBook Core m3 1.1 12 inch (Early 2016) :
add more RAM – can’t be done.
Replace or add more storage – can’t be done
Replace battery – can’t be done
Connect to a Monitor or display for more screen real estate
Use a dongle to actually use any peripheral. You might need more than one.
Protect Your MacBook with a Case
Backup Your Files with an External Hard Drive
Upgrade to a faster MacBook Pro