Shut SMS #13

Rabbi Shlomo Aviner answers hundreds of text message questions a week. Some appear in the parashah sheets "Ma'ayanei Ha-Yeshu'ah" and "Olam Ha-Katan." Here's a sample:
Q: Is it permissible to throw away tapes with Divrei Torah on them?
A: Yes, nothing is written there.
Q: Does a non-Jew who cooks kosher food make a pot unkosher?
A: Yes.
Q: What about a Jew who violates Shabbat?
A: No. Yalkut Yosef.
Q: A person picked fruit from a non-Jew's orchard without his permission and he gave it to me. It is permissible to eat it?
A: This is stealing and you should not be a party to it.
Q: Is it permissible to use sunflower seeds in an art project in nursery school?
A: Yes, there is no problem of "Bal Tashchit" (wanton destruction) since this is also using it.
Q: Is it permissible to make a plus sign in math which looks like a cross or should one write it as an upside down capital "T" because of a concern of Christian idolatry?
A: There is no problem, since this is not the use of idol worship at all. See Shulchan Aruch, Yoreh Deah 141:1 and Shut Aseh Lecha Rav 5:21 of Ha-Rav Chaim David Halevy.
Q: At what age should we have our son start wearing a kippah?
A: At the earliest possible age, but without forcing him.
Q: Is it theft if I meet someone in the lobby of a hotel?
A: Yes. You should order a drink.
Q: Do séances have some truth to them or that they complete nonsense?
A: Complete nonsense, and completely forbidden.
Q: Is it permissible to print a verse from the Tanach on an invitation?
A: No. They are generally thrown in the garbage.
Q: What should one do on his birthday to make it holy?
A: "Cheshbon Ha-Nefesh" – a spiritual accounting of his life.
Q: Is it permissible to blow up a balloon on Shabbat?
A: It is permissible, but you must tie it with a rubber band.
Q: Is there a segulah (usually understood as a mystical action which will bring about a particular consequence) to find a spouse?
A: Prayer, repentance and tzedakah.