I might be making some more Weather Channel videos with Christmas music on my YouTube channel, like last year. 

My dad wants them LED and I tried finding replacement trims, nothing came up.

Can you get a shower trim and glass for these ? It would help with sealing them and you could use the existing lamps.

Yes, I know LED sucks and all, but we need these cans to be airtight because they are quite drafty. They are 5 inches. I searched Atlite on Google and all that came up were some EXIT signs made by Cooper Lighting under the AtLite name.

those fused plugs on Xmas late 1970s into late 2000
had non replaceable fuses.  replaceable  fuses appears
in the late 80s on new expensive sets. then became standard on all sets.

fused plug came out when bulbs starting to have shunts
and it can happen all lamps EOLed and shunt all lamps
and heat up the wires to cause fires.  that  when all xmas set have fused.  now some of portable fans
are fused as well and use those style of fuses
it going to come to a point that all aplences less than 12 amps to have fuses.  cause they want to use smaller cables to save cost. 

My parents were married in 1976 and had no lights the first Christmas. The following year they did and I presume they purchased them new. They had the prong/receptacle combination with a non-replaceable fuse. They might have appeared a few years prior to 1977.

In my part of Canada, replaceable fuses are only starting to appear in the last few years.

Yeah, the fusible link (non-replaceable fuses) plug ran much longer than 1990. I still saw those on cheaper sets well into the 2000s.

I believe they sold off their Christmas lights long ago. They still seem decent, though.

I've bought a Noma 40 Clear Filament set and more Replacement Bulbs, Coloured and Clear....
 
Anyone Else?

Well I was looking on Cooper Lighting/Eaton's area lighting, and they stopped making the Galleria area light fixtures. So TXDOT probably going to start using LEDs on high masts, since Cooper Lighting/Eaton has stopped making the Galleria, which TXDOT uses for their high mast poles.

http://www.cooperindustries.com/content/public/en/lighting/products/area_site_lighting.html