I have a problem hearing my cell ring when I am at home. Is there
available a cradle I could put the phone in that would then emit a
much louder ring
on incoming calls?

I doubt that there's a cradle that specifically does that, but you
could raise the volume settings on your phone. Also, there may be some
way you could set your phone to ring your home phone instead while
you're there; some companies sell "forwarding cradles" that do that.