Easy and useful burn of 450 stamina is the TP event. You could waste more using Gems to restart it but the payout's not worth the gem cost IMO.
This game has completely devalued regular stamina which makes it all the more upsetting that there was a fair bit of it in gifts. Not a ton of promo stamina though.
Pulled a present and felt like I had to pick the 5,000 regular stamina. So now I'm up to 16k. Is there anything worthwhile to use it on? (And don't say TOTW, because it'd probably take until MM 2021 to play that event that many times haha.)