Indoor FM antenna

I recently inherited a Day Sequerra M4 Reference tuner. Lucky me! I have a $15 indoor antenna that doesn't work at all. My problem is that I live in a condo, and the board is entirely populated by tyrannical philistines who will not even listen to any suggestion of an outdoor antenna, no matter how inconspicuous. €¿§£! I conclude that anyone who wants to serve on a condo association board should be prevented from doing so by any means necessary.
Is there such a thing as an effective indoor antenna? Point me at it and I will be eternally in your debt.