Twitch Prime is providing new Care Packages.
I already received Care Package Charlie since I have an Amazon Prime account:
A decal, an emblem
14 day rental on Lorraine 40T 15% off for purchase after rental
14 day rental on KV-122 40% off for purchase after rental
250 gold
5 auto fire ext
5 large repair kits
5 garage slots
And there will be more packages. Another in April, two in May, then one every month until February 2020.
It doesn't say what is in the rest of the packages, but like this one the first two were really good, even got Charlotte Wells.