There is an eBay auction for a handmade set of 224 nuisance creatures, perfect for using with The Fantasy Trip. These are 1/2" counters, so you can fit a lot of them on a single hex! Included are swarms of rats, vampire bats, pirahnakeets, scuttles, wasps and spiders.
The auction can be found here:
https://www.ebay.com/itm/273647536739
Thanks for viewing!