For now ent means activities of some kind (mostly at beach, but not limited to), leisure (sewing or creation of dolls, even puppet-show for characters like Alice Margatroid), playing games (including video games), relaxing in onsen, etc.
Basically, it's like rest, but much more active.
Oh, that remindes me, while I have yet to see a picture for meditation tag, there are a lot of pics with sleeping characters. I guess we could use sleeping tag.