Well, the thrift store in our area takes ‘used’ stuffies provided they’re clean and intact; I imagine other places would as well. Or day care centers, homeless shelters, even nursing homes (where they could be used in occupational therapy), etc. Church nurseries also might welcome them. . .
Failing that, divide what you have and put 1/2 to 3/4 of them in storage (attic, basement, etc.) Then ‘rotate’ --after 4 to 6 months, gather the ones you currently have out, put them into storage and take out some that were in storage, etc. Cuts down on the clutter. Repeat as needed.