When it comes to expressing the idea of "our own," there are several synonyms that can be used. For instance, "personal," "private," or "individual" can all be used to convey the sense of belonging and ownership in a particular context. Similarly, "in-house," "proprietary," and "exclusive" can be used to suggest that something is unique to a particular group or organization. Other synonyms for "our own" might include "custom," "bespoke," or "tailored," all of which suggest a sense of personalization or customization that is designed to meet the specific needs or preferences of a particular person or group. Ultimately, the choice of synonym will depend on the context and intended meaning of the phrase.