They look like purple glowing tumbleweeds. You can even put 'em in stuff like sake and milkshakes to absorb their power. [He's not even going to pretend that sounds anything like normal. Even he admits it's weird.] A Digimon that's hurt can absorb them and it helps the healing process speed up.

[He inspects his arm, moving it back and forth.]

Yep, that'll get the job done right there.