Ecce, idem arcus et eaedem sagittae quae Ulixes olom portabat.
Is the relative pronoun quae neuter plural because arcus and sagittae are different genders?
Presumably so, but it’s an ugly sentence. (And olom should be olim?)
P.S. And a search throws up “Hic est idem arcus, hae eaedem sagittae quas Ulixes olim portabat.” Which is much better.