Convert Selected Choices to Collection Variable in Flow
When a user selects multiple choices on a flow screen, all the selected values are stored in a single variable. In order to loop through them, you have to convert them to a collection variable.
Packages
Using Flow to Undelete Records From the Recycle Bin
There is no out of the box undelete records operation in Salesforce Flow. However, it is possible to achieve this with an Invocable Apex action.
Play Sound Effects on Flow Screens
Have you ever wanted to play sound effects on flow screens? If so, this component is the solution that you are looking for.