Every visual you generate is kept, so a good one is not stuck in the lesson you first built it for. A dice roller that worked well for probability can go straight into next term's revision lesson.
Picking one
Add an Interactive visual block and choose Select existing. You will see everything you have made, with a search box for when the list gets long.
Each card shows the real visual in miniature rather than a generic icon, so you can recognise what you are looking for at a glance.
Versions
When you edit or rebuild a visual, the new version joins the original rather than piling up as a separate entry. The picker shows you the most recent version of each one, under its most recent title, so the list stays the length you would expect.
Copies are independent
Inserting a visual into a lesson gives that lesson its own copy. Editing it there will not change the lesson you originally built it for.