Unusual depends on your area, and I always found big name lists useful when I was looking, so here's some mega lists with the more usual names left out. Hope you and your friend enjoy:
Girls:
Abeni, Adora, Amalia, Angela, Aphra, Arina, Aveline, Bettina, Bithiah, Breeshey, Caelia, Calanthe, Concordia, Cyra, Davidyah, Eartha, Freema, Gwendolen, Haidee, Harleen, Harmony, Ida, Irena, Irina, Janine, Janet, Jane, Katura, Kyra, Liviana, Lucinda, Makeda, Malia, Maura, Mercia, Mirabelle, Miruna, Nerissa, Olivine, Qristina, Pandora, Panthea, Pearl, Reina, Rena, Renana, Roxana, Safia, Salvatrix, Salome, Samantha, Samara, Sera / Serah, Signy, Trudy, Ursa, Ursala, Valora, Vivian, Vivianna, Vivienne, Whitney, Winifred, Winifreda, Winona, Winry, Xenia, Xene, Xylia, Zala, Zanna, Zara, Zenzi, Zori, Zula, Zuri
Any: Andor(i), Desta, Innes, Jaimie, Harley,Kelley, Kelsey, Meredith, Morgan, Nephi, Oswin, Pace, Parker, Phoenix, Robin, Shea, Sheridan, Sol, Sylvain/Sylvaine, Tanis, Teagan, Tempest, Terry, Wynne, Yuri/Yori, Zaka, Zakiah, Zan, Zeal, Zuma, Zurien
Boys:
Alphonse, Amidor, Angus, Aristide, Aristides, Avi, Avinathan, Brennus, Colby, Cyrus, Dante, Drust, Drustan, Drystan, Ellis, Ezana, Faolan, Franklin, Fredrick, Gratian, Haldor, Hallam, Iestyn, Jeremy, Jesper, Junix, Lovel, Malcolm, Malkiel, Manfred, Maric, Marlon, Maurus, Maxen, Merrick, Merritt, Neil, Nelson, Owen, Patrick, Pherick, Quinlan, Reuel, Stellen, Tiernan, Theodor, Tiernan, Torben, Trevor, Tullius, Tulio, Tully, Tural, Ulrich, Ulrick, Varian, Varric, Wilfred, Zachary, Zach, Zakkai, Zunan.