“Can I borrow your cheftza so I can hear this tape?” (Weiser)

“This tape recorder has more switches than I can figure out how to use. It's a real cheftza (really something).” (Weiser)

"Regarding the question of females – even though they are patur from the mitzva of Talmud Torah, but as the Brisker Rav says from Rav Chaim, their Torah is still a cheftza of Talmud Torah." (source)