What is "too small"? My baptismal cross is a small (less than 3/4" long and very delicate), cheap, silver one I purchased in Kyiv in the event I should later become Orthodox. I bought it at a religious bookstore in the underground bookmarket on Ploschad' Slavy, beside the Hotel Salut. I personally prefer small, delicate crosses, but am now curious about what is "too small".
Oh, you just posted, ozgeorge! That's such a good idea! Very sturdy and practical.