Shirat Devorah has a post about a prayer on behalf of children which is recited on Erev Rosh Chodesh Sivan (Thursday, May 13).
Additionally, I received an email from Tzidkat Rashbi about sending a kvitel (a small note with a request) which will be recited in Tiberius at the Tomb of the Shela Hakadosh on Erev Rosh Chodesh Sivan. Click here to send a kvitel.
Dreaming of Moshiach asks, "Do you want us to pray for you in the grave of Rabbi Yonatan Ben Uziel in Amuka for a decent match? If yes, please email email@example.com and b'h and b'n I'll pray for you at the Tzaddik's Tzion tomorrow, erev Rosh Chodesh Sivan."
May all our prayers be answered for the good.