Everytime I climb a tier...
I gift the person I thought played the best (excluding myself of course) on my team as a thank you and to remember that we are all people behind these screens / characters we play.
Tuesday / Wednesday I made it into plat 5. I decided the Wukong I played with had the most impact on the game that lead to our victory. So I wanted to give them a skin of a champion they liked. So I asked them who they liked and they gave me a list of champions they played. I couldn't find a way to easily gift them a skin from inside the game lobby that had just finished so I had to settle for a mystery gift.
It ended well, they got Brolaf, but I wish there was a little more flexibility in what I was able to gift them. I'm guessing restrictions are in place so people do no abuse the system.
On a second note, I have a lot of IP that I don't have a good use for. I'd really like to be able to donate my IP to another player at the end of the match. Is there any chance this could happen?