Start the year with an empty jar and fill it with notes about good things that happen. Then, on New Years Eve, empty it and see what awesome stuff happened that year. Good way to keep things in perspective.
How to DIY an adorable album to save special greeting cards!
While on a trip, send yourself a postcard every day from where ever you are and write what you did that day on it...then bind them when you return to have a journal of your trip -- complete with photos, stamps, and a run-down of each day's events!