Create a list of items you want to get. A Hero Loadout type wishlist can contain items for the selected hero. A Selection one is any items. Items that cannot be traded cannot be added to wishlists.
There is default Selection type wishlist "My Picks", for easy use.
DotaShowcase tracks the progress of wish lists. After inventory is refreshed from Steam, platform marks new items you got as completed across all you lists. If the list contains all completed items, it will be marked with the status "Completed".
Dota 2 skins are a great gift to get. Share your wishlists with your friends and family and get gifted.