The eggs come in many different shapes and colors. If a Keeper were to discover this egg bundle on a traveler, it would likely spell sudden death. Horrible pests and monsters have been carried from world-to-world in this way.
There are countless kinds of pests like these in ovo. The curious and vigilant may consult the Library of All Worlds for examples. Ask Librarian Moldy Scratch to find you a copy of The Egg Scrolls within the Forbidden Manifest; it is a comprehensive list of egg-types which are prohibited in Everway (or consult Hereticwerks' Strange Ovum table).
The Librarians are all-too-familiar with The Scroll Gourmands, also known as Thysanurians. They are one such intelligent pest species that have been spread this way. When in the Library of All Worlds, it is also worth your time to look-up the Stained Library of Feasting Horde; this is a cautionary tale of what destruction can be wrought from a few insect eggs.