Pipeflare lets you earn ZEC, MATIC, SHIB and their own 1 and 2 flare tokens https://pipeflare.io/r/4bf9

Horizen lets you earn ZEN https://getzen.cash/auth/register?ref=338278

Publish0x lets your earn ETH, AMPL & SPOT https://www.publish0x.com/?a=4zbqxW82ap