There is a site called 21 days of Ahavas Yisroel which is a great idea for this time of year.
Here is the description (with permission) from their home page:
This time of year is traditionally one of mourning for the Jewish people. Starting on 17th of Tammuz (July 19) and culminating on the 9th of Av (August 9), this period commemorates the destruction of the second Temple and the end of the Jewish sovereignty some 2000 years ago.
Since that time we have lived in exile, moving from one country to another, often being openly despised and hated by our host nations. What was it that brought the nation of Israel to such a lowly state for so many centuries? Our sages tell us it was ‘Sinas Chinam,’ or senseless hatred, of one another.
What better reaction can we have than to make these days a time when we focus on acts of senseless love of all Jews, regardless of any difference we may have.
Each day during the Three Weeks we will post a different story of Ahavas Yisroel. The hope is that these stories will inspire us to to strengthen our own efforts in this area.
Send us your stories! Tell us any incident of how you succeeded in the mitzvah (good deed) of Ahavas Yisroel (loving Jews), no matter how small. Together, one small step at a time, we can change the world