Also looks like Creeping Bellflower (Campanula rapunculoides) which, while having pretty flowers, is liable to take over...it's also pretty common in overgrown gone wild gardens.

Don't know what Kinder eggs are but this plant is fine. I'm aware some OTHER Euphorbias have toxic sap, some of which can cause skin irritation & in severe cases eye injury, I don't believe Euph milii has the same situation. I am one of the folks who consistently cautions folks abt Euph sap, like E. trigona, E. lactea or E. tirucalli (is that the Firesticks?) I handle this E. milii plant w/ bare hands & don't give it a second thought. I've pruned, trimmed cut & re-rooted, w/ no problems at all. That said, E miliis are easy care, very rewarding plants. Tho' they ARE succulents, they like far more water & fertilizer than one would normally give succulents. Once I started following that advice, my Miliis bloom (indoors) 6-8 months of the year. They also want the most & best light you can give them. Even direct sun (after gradual exposure). Your mix could use lots more perlite, like 50% more. Glad to learn the plant's not nearsighted ;>)

It needs good drainage. If there is no hole in the bottom of that cup there should be.

Pls help us to help you by showing a pic of the whole thing & also telling us what the plant it is, if you know. Where in the world are you geographically pls. Am guessing it's somewhere tropical & from the precision of those dots, I'd guess some kind of fern spores, how some ferns reproduce, not from eggs nor baby plantlets like some succulents, but from spores.