j card sleeve J.Crew Men's Leather double-sided cardholder (Size One Size) 2.4 x 3.4 inches (60 x 87 mm) Cassette Art Templates - National

Get the printable PDF and use soft pastels for a sweet look

Food tokens are already fine on their own, but what if Food tokens could be made to do almost anything

They make the (in my jaded opinion) pretty dumb gimmick of sticking crystal hats onto all the Pokmon look about as good as it possibly could

Some NPCs need to be defeated before other NPCs will fight you, but thats about it

The other one worth mentioning is Eldrazi Temple, but as Eye of Ugin is an enabler it's the more powerful of the two

Temple Bell, Otherworldly Atlas, and Mikokoro, Center of the Sea are safer because you can time their activation to best suit your needs while still giving everyone the benefit of extra cards