diff --git a/packages/core/src/models/content.model.ts b/packages/core/src/models/content.model.ts
new file mode 100644
index 0000000..9cb156e
--- /dev/null
+++ b/packages/core/src/models/content.model.ts
@@ -0,0 +1,40 @@
+import { Timestamp } from 'firebase/firestore';
+
+interface IContent {
+  id: string;
+  creatorUserId: string;
+  contentUrl: string; // remote resource of file/media
+  createdDate: Timestamp;
+
+  // visitCount
+}
+
+// ? persist length of clip for easier viewing for others...
+// ?they have to load it anyway and will get metadata anyway?
+export class AudioClip implements IContent {
+  constructor(
+    public id: string,
+    public creatorUserId: string,
+    public contentUrl: string,
+    public createdDate: Timestamp = Timestamp.now(),
+  ) {}
+}
+
+export class Link implements IContent {
+  constructor(
+    public id: string,
+    public creatorUserId: string,
+    public contentUrl: string,
+    public createdDate: Timestamp = Timestamp.now(),
+  ) {}
+}
+
+export class Image implements IContent {
+  constructor(
+    public id: string,
+    public creatorUserId: string,
+    public contentUrl: string,
+    public thumbnailUrl?: string,
+    public createdDate: Timestamp = Timestamp.now(),
+  ) {}
+}
diff --git a/packages/core/src/models/conversation.model.ts b/packages/core/src/models/conversation.model.ts
new file mode 100644
index 0000000..cc7004f
--- /dev/null
+++ b/packages/core/src/models/conversation.model.ts
@@ -0,0 +1,22 @@
+import { FieldValue, serverTimestamp, Timestamp } from 'firebase/firestore';
+export default class Conversation {
+  constructor(
+    public id: string,
+    public name: string,
+
+    public createdByUserId: string,
+
+    public lastUpdatedDate,
+
+    public createdDate,
+  ) {}
+}
+
+export class Member {
+  constructor(
+    public id: string,
+    public userId: string,
+    public role: 'admin' | 'regular',
+    public joinedDate = serverTimestamp(),
+  ) {}
+}