They’re virtual gifts. You go to your profile, look for “gift shop”. There’s an area to enter the recipient’s username and room for a short message. Also you’ll see the options of gifts and their “prices” (SW coins). Click on to add the gift, and send it. You’ll get a notification when the person “opens” it. 🙂

Oh. I wish we could buy real gifts with sw money at the sw store and it would be sent to the other user's mailing address. That would be cool.
But also creepy 😁