The Ericsson T68 is famous for having a complementary camera – one of the earliest examples of a cell phone capable of taking photos. But modern smartphones have so many features that there are no gaps in their capabilities. Still, the extension companies have to sell something and the results are … well, we’ll let you be the judge.

Do you yearn for the ergonomics of old-fashioned handsets? Just plug in one of those and you’ll be transported back to the good old days of using pay phones or waiting until you’re home to make a call. There are Bluetooth versions too, for those of you who want to look retro but are betrayed by the lack of a 3.5mm jack on your phones.

While we haven’t found a way to play vinyl records on your phone, you can experience the joys of analog audio with this practical accessory. It lets you listen to your old tapes and even convert them to MP3, so the songs you recorded on the radio when you were 14 can follow you into the 21st century.

Maybe you are a pirate – no, this is not someone who downloads MP3s illegally, here we are talking about the type pirate “sailing the high seas with a parrot on the shoulder”. Well, navigating will be a breeze if you have a anemometer plugged into your phone. How else do you know if the wind is strong? Stay outside?

You can spice up your YouTube videos with the SoloCam – it’s a selfie stick that ends in an old-fashioned microphone, so you look like you’re being interviewed for the six o’clock newspaper. Alternatively, you can start a karaoke chain, it will definitely be a hit!

Pet trees can provide increased interactivity with your pet, assuming you were previously the proud owner of a pet rock. Unfortunately, modern phones no longer have lanyard eyelets, so your pet tree may have to stay at home. Also, it’s apparently not a tree, but we’re not botanists, so don’t take our word for it.

We will end with a personal favorite – Will.i.am’s I am + photo.sosho range of accessories for iPhone 4, 4s and 5. They feature a sliding QWERTY keyboard, supported interchangeable lenses and a screaming retro look that’s hard to beat.

What’s your favorite weird phone accessory?