Although I am a Waterfox user at home, at work we are limited to using Internet Explorer. Years of dumping things into Favorites has left a mess, and I feel that IE doesn’t provide a good way to organizing Favorites.
Open-Favorites.ps1 is a short PowerShell script which finds your Favorites folder, does a recursive search of the folder, then sends the results to Out-GridView where you can select one or more to open. Out-Gridview requires PowerShell 2 with the ISE installed, or PowerShell 3 or later.