If you have trouble hearing your home phone ring you should try this. The Bellman Ringer is a battery powered extension ringer for your landline. Lets you increase the volume and change the pitch/tone to suit your hearing loss. Simple, Loud and effective.
Theres not much more we can say about this one, its easy to install and effective. If your friends and family are always complaining that you never answer the phone you might need one of these (or you might not if you'd prefer not to talk to them!)