I like staking clams. 

https://1broker.com/m/r.php?i=8768
https://www.bitfinex.com/?refcode=JuvbcI1CzI
https://www.bitmex.com/register/f1qY9q
https://www.okcoin.com/?invid=2076079
https://simplefx.com/?sfx-r=fb817c64-a4af-4d28-9d5e-8eb918121483
https://bit4x.com/invite/2c724af5
https://localbitcoins.com/?ch=4vi3
https://www.quadrigacx.com/?ref=jsmu1vwd8mir1a35fa67ogwb
https://primedice.com/?ref=CarlJeff
https://purse.io/?_r=B2Z_KK