These are the resources I tend to use when solving or making puzzles.

Word things

Anagrams
Cryptanalysis
Cryptograms
Ciphers and codes

Puzzled Pint Code Sheet:

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Digital

Crosswords

Crossword solvers
Cryptic crosswords

Logic puzzles

Other

Specific searches
Spelling with a limited alphabet
Geography
Puzzle types

Collaboration tools

(beyond Google Sheets)

Puzzles

Roughly in order of difficulty, easiest to hardest:

Cryptic crosswords:
Escape rooms:
Physical game reviews and gift guides:
Novel formats:

Puzzle creation tools