Content collections linked to a base item

A computing apparatus comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, configure the apparatus to perform operations to facilitate content sharing between a first user, a second user and a third user, the operations comprising:
• causing presentation of a first public content collection on a second user system of the second user, the first public content collection comprising a plurality of user input content items;
• receiving, from the second user system of the second user, an indication of a combination user input related to a first user input content item, the first user input content item forming part of the first public content collection and comprising at least one of image content or video content, the first user input content item having been shared to the first public content collection by the first user using a first user system;
• responsive to receiving the indication of the combination user input from the second user system, invoking a combination function on the second user system, the combination function to access a second user input content item and combine the first user input content item with the second user input content item to create a first combined user input content item, the second user input content item comprising at least one of image content or video content;
• responsive to determining sharing, by the second user, of the first combined user input content item to the first public content collection, causing the first combined user input content item to be stored in association with the first user input content item in a second public content collection;
• receiving, from a third user system of the third user, an indication of a combination collection presentation user input related to the first user input content item;
• and
• responsive to receiving the indication of the combination collection presentation user input, invoking a combination collection presentation function on the third user system, the combination collection presentation function to:
• cause presentation of a collection interface on the third user system;
• and
• enable the third user to navigate the second public content collection within the collection interface.

A non-transitory computer-readable storage medium, the computer-readable storage medium including instructions that when executed by a computer, cause the computer to perform operations to facilitate content sharing between a first user, a second user and a third user, the operations comprising:

• causing presentation of a first public content collection on a second user system of the second user, the first public content collection comprising a plurality of user input content items;
• receiving, from the second user system of the second user, an indication of a combination user input related to a first user input content item, the first user input content item forming part of the first public content collection and comprising at least one of image content or video content, the first user input content item having been shared to the first public content collection by the first user using a first user system;
• responsive to receiving the indication of the combination user input from the second user system, invoking a combination function on the second user system, the combination function to access a second user input content item and combine the first user input content item with the second user input content item to create a first combined user input content item, the second user input content item comprising at least one of image content or video content;
• responsive to determining sharing, by the second user, of the first combined user input content item to the first public content collection, causing the first combined user input content item to be stored in association with the first user input content item in a second public content collection;
• receiving, from a third user system of the third user, an indication of a combination collection presentation user input related to the first user input content item;
• and
• responsive to receiving the indication of the combination collection presentation user input, invoking a combination collection presentation function on the third user system, the combination collection presentation function to:
• cause presentation of a collection interface on the third user system;
• and
• enable the third user to navigate the second public content collection within the collection interface.