(me again) currently there are no lids for it on WMV Homeshop either.

So far I haven't seen any at Galaxus or at a CH shop at the time of purchase (a long time ago). However, the shape of the rim is definitely such that a sealing lid would be possible. So far I've always used transparent film, but yes, if there were a lid for it somewhere.... I would find this great. Thank you for the question and the suggestion.

i didn't even come up with the idea....... but good idea!
i would also be interested.