Sounds like they're doing pretty well.

Sorry I've been away. My tapatalk app wouldn't let me post, but all is fixed now .

I'll take a good look at them and see if I can tell their species. They sure are cute! It will be easier to choose proper housing knowing their species.

A good start is cocoa fiber substrate, as you have mentioned . Basically a similar set up with leaf litter and a water bowl will be fine. Maybe a nice cave to hide in. They will likely burrow in the substrate, which is fine. I'd avoid gravel. Large rocks (bigger than them) can be used if you like to secure plants or for decor. A simple substrate change every 4 to 6 weeks will keep their house clean.

Plants are fine. You have to completely rinse them of all fertilizers and the soil they come in and replant with substrate. Heavy plants are best bc these little guys are pretty tough when they grow up . You can also put the pot right in and cover it with substrate. Then they won't uproot your plant that way...more of a concern for later, being they are so small right now.

Temps and humidity? For now, just try to keep their home at the approx temps it was when you found them outside within a plus or minus 5 degree temp higher or lower. An average range is about 75 to 80 degrees, but knowing their species is the best way to provide the perfect range for them. A Under Tank Heater (UTH) is an easy way to heat their home. Only place it on a side, not the bottom, so they don't bury and burn themselves. Most recommend placing it on the opposite side of the tank than the water bowl. This allows them to choose a warm or cold side since they can't regulate their own body temp. Toads in general prefer a drier environment as they get older. A super light mist is fine. The water bowl is best.

A nylon top is fine for now since they're small. A screen top will be best once they are big enough to eat bugs that can no longer fit through the screen holes. A rock or heavy object, or heat lamp can hold the screen down later. Surprisingly, toads can climb .

Let's see....am I missing anything? There is a good toad care sheet thread here. I'll look for it for you .

A food bowl can be used later too, once you move up from fruit flies. Crickets can't climb glass or slippery sides. It keeps them from nipping at the toads, and from making babies in your substrate. Easier to clean too. They'll actually learn to wait at the bowl for food . It's so cute! I'll link a pic of our old toad Dumpy for you (waiting for food) .

I'll reread through everything and see of I missed anything. They're pretty easy to care for.

You're doing great so far!!!

We just let a bunch go free the other day too. I have my remaining 8 left.