This fella right there. Grub is an item that gives you a nice 10% energy boost, and unlike Bone Marrow it doesn't have a daily limit. At the moment, it is available as a lower-tier Shuffle prize.

I think a fun way to get this little Grub out into the site more, would be to make it available as a rare item from digging in Elephant Dung. Right now you can dig up toys and the occasional elephant carcass. Grubs are known to gravitate towards elephant dung, so why not?

Or, You can also attempt to catch beetle larvae in explore-- what if that encounter has a small chance of giving you the Grub item instead? Might be nice for those of us who don't use battle beetles :)

I'd love to see this handy item a bit more common! If you have a different idea (maybe as a different game prize, or somewhere else in explore) feel welcome to share!