While he already mentioned enjoying cereal with fruit for breakfast in this article, he also talks about learning his Scouse accent for his part as Robert Smith in Comrade, and he talks about “honing his culinary skills” by making… well, read for yourself!
UPDATE: While Total Film’s newest issue doesn’t offer any new pictures of Rupert as Ron in DH2, there is a more elaborate quote: “I’m really looking forward to watching all the battle stuff,” raves Grint, who’s just as excited to see the big-screen finale as the millions of eager Potter fans across the globe. “It’s going to be quite something to see all these sets get destroyed, like the Great Hall – just this flaming ball of rubble with dead bodies littered everywhere. Seeing it get smashed up had a weird effect on me, because it’s quite an important place to us – it’s where we grew up. It’s gonna look really cool, though.” They also called his performance with the scene of Fred’s death “impressive”. I thought it a very good sign for them to even note this moment in their write-up!