On the Subject of Christmas

Enjoy.

This is a puzzle hunt made for Timwi for Puzzlers Club Secret Solver 2019. No knowledge of KTANE is required for any puzzles except the final meta. There's also nothing hidden in the HTML source, filenames, or binary of any of these files.

(I may have overshot the difficulty level on some of these, particulaly Battleships. Hint requests will be freely answered. Feel free to work with other people, too.)

S.E.T.	Discolored Squares	Black Holes	X-Rays
Colored Switches	Bitmaps	Word Search	Marble Tumble
Odd One Out	Binary Puzzle	Dr. Doctor	A Souvenir
Battleships	Blind Alley	Rubik's Cube	Regular Crazy Talk