More on convenience, but another items not exactly drink holder related:
Pink phones are very popular with new phone shoppers. There are many different colored phones available in the marketplace, not only do they come in pink but they are also readily available in red, gray, black and various other colors (sadly our cup holder only comes in black). Whilst pink mobile phones of the only color that some people will even consider purchasing, it is important that they consider other factors as well.
Chief among the items to consider when purchasing a phone is the type of keyboard that the phone possesses. Many modern phones only possess a touchscreen keyboard. For those who like this type of keyboard these are a wonderful improvement, but for many there are also better alternatives tha still work with your existing wheelchair accessories.
A lot of people find it easy to type on an actual real physical keyboard. Blackberry phones are one type of foam that have real keyboards, but the different the downfall of being rather small. This is due the fact that they share the phone surface with the screen as well.
By seeking a full-size QWERTY keyboard a better off getting a phone that has one of these in place. Slider phones are probably the best candidate for this type of user. These combine a full-size QWERTY keyboard, with a sliding screen that is also full-size resting on top. This is the best of both worlds.
A lot of people find these full-size keyboard a lot easier to type with, which greatly reduces the usability of their new phone. The matter how attractive those pink phones are they are limited use if you cannot type on them, which is why it is important to seek an adequate quality keyboard.
Once potential buys them identify the right color and keyboard for the phone, that it is simply a matter of researching the available models that meet the criteria. They can then purchase the best phone from what will probably be a small list.