http://journaleyapp.com
https://alternativeto.net/software/mini-diary/
http://www.lanet.lv/simtel.net/win3/pim-pre.html -
darwin11.zip (990309) 54K Diarywin: Daily Diary/Journal. Freeware
mpd46a.zip (970708) 399K My Personal Diary: Multifeatured private diary
http://www.lanet.lv/simtel.net/win95/pim-pre.html
Or we could write our own....