Amphibians! what are some odd easily purchased amphibians my african clawed frogs can't fit in their mouth.?

i am trying to start an amphibians tank with newts, salamanders, frogs and all fully aquatic. so no toads. reptiles are fine as long as it only needs to pop up for air and not sun bath haha so a sea turtle i guess bah ha. anyway i want the oddest amphibians and fresh water life you can find. NO FISH! I HAVE TERRIBLE LUCK WITH FISH. I AM THE HITLER OF FISH!