I'm going to put up a few puzzles here. Right now there are just two old ones, but I'll probably make more, so check back!
In the Cards, a short puzzle that requires some knowledge of Magic: the Gathering.
Fun Menu, a fun menu puzzle.
I have a tradition of making puzzle hunts for my sister for her birthday. Here are a couple puzzles from past years that were reasonably easy to put up online (as opposed to ones that involved physically searching for things in her house). Note that my puzzles for her tend to involve knowledge of science fiction novels and the Washington DC area.
Travelogue: one of the 2019 birthday puzzles.
WMATA announcement: another one from 2019, very DC-themed.