There is a simple and CHEAP fix for those stupid, wimpy, fuse-in-the-plug
light sets: Cut off that worthless and trouble prone fused plug and REPLACE
it with a REAL (regular) plug. Problem solved. (no joke)

OK, UL-lovers and hand-wringers: Flame away... (pun intended)
--

JR

You know those fuses were added for folks like my wife who would string
20 together and wonder why their home burnt down.....

polarized polugs GFCIs, grounded plugs, and all the rest are there for
our safety and protection.