Not sure if this is good a place for this thread but i would like to share an interresting option for you.

Fairdrop.io is na new project that was build to present aidrops free of bots. Thay achived that by using IDENA (first proof of person blockchain). https://medium.com/@idena.network/how-idena-works-4f4d19aabbb1

IDENA has 2400 nodes out of which 300 already registered on fairdrop.io (3 days after project start, this number will rapidly grow)

They just started with first airdrop: