These are two (21.436a-21.436b)wooden dowels, each with four bands of black paint spaced roughly evenly across the length of the shaft. They are likely models of a specific type of bow or arrow.
From Deir el-Bersha, tomb 10, shaft A (tomb of Djehutynakht). May 1915: excavated by the Harvard University–Boston Museum of Fine Arts Expedition; assigned to the MFA in the division of finds by the government of Egypt. (Accession Date: March 1, 1921)
Harvard University—Boston Museum of Fine Arts Expedition
Egyptian, Middle Kingdom, late Dynasty 11 – early Dynasty, 2010–1961 B.C.