Counting of the Omer, (sometimes abbreviated as Sefira or the Omer) is a verbal counting of each of the forty-nine days between the Jewish holidays of Passover and Shavuot.
Omer-counters range from decorative boxes with an interior scroll that shows each day’s count through a small opening, to calendars depicting all seven weeks and 49 days of the Omer.
Studio Gruss in New York came up with a highly original counter.