Just wondering if anyone here may be able to help me locate a pair of sockets for T12 instant start slimlines.
The type used on simple strip lights.
Any help sure would be greatly appreciated.

Looks like Home Depot still sells them in store if you're only looking for the basic slide on style used with newer striplights.

Plunger end
Fixed end

You'll need both the plunger end and the fixed end to form one complete set for a lamp.

If you're looking for other styles such as bolt-on, butt mount, turret, etc then eBay or Semperlite is probably a better option. Note that if you want to fit them to a strip designed for bi-pin lampholders, you'll have to widen the opening.

The ones at Home Depot are perfect, thanks Joseph!
They'll work perfectly with the ballast you found for me for my gold slimline tube.
Thank you my friend! Can't wait to light it up!
Everyone here is better at searching the internet for certain things than I am.

No problem! Hopefully you can get that slimline lit up.