I got two of these USB flash drives last year just for personal use and I love them. I got the both of dell for about 15euro each which I though was a great bargain.
They are 8GB in size but I'm sure you could order the same flash drive in a larger size. It is black in colour and has a plastic exterior which has a clear line in the middle which shows in bars the amount of space that is being see which i think is great if you want to use a lot of space you can see at a glance if it will fit.
It's made by lexar who are a nice reliable brand. I have had previous flash drives from this company and they all work great.
I would recommend this as it is good quality and has lasted me almost a year! I attach it to my car keys so it gets thrown around a lot and still works!