Melbourne Console Reproductions has recently released a Commodore 64 Cartridge Re-Locator. Basically this is an extension of the C64 cartridge port that allows you to plug your cartridge in upright so you can easily read the label.
The price of the Cartridge Re-Located is $25 AUS which is about $17.50 US. Plus they have free international shipping.
Melbourn Console Reproductions also produces a decent amount of other C64 accessories. You may want to take advantange of the price difference and the free shipping by checking out their Commodore Catalog while visting.