Wrap it with adhesive tape and get back to work! Source: night crew, crew pig, supermarket 1980-1983.

Two player blind shuffle. All players except one turns away. Remaining player shuffles. All players except a different one turns away. Remaining player shuffles. Now no one knows which pile is which.

> All players except one turns away.

A bit trusting!

Assuming at least 3 players, only have 1 player turn away during each round of shuffling.