Hi,
I tend to keep my eyes open and let things find me, rather than seriously looking for them. Then it's a simple matter of answering the 'can I afford it?' qestion positively and buying it.
Usually the item that crossed my way pulls me into a quest to learn everything I can about it, opening up ways to new things that interest me.
The main things that get me going are the form & function combination, an elegant form, combined with a superb quality, especially true for the Luger, but also for the Mercedes S-class of the eighties, my other passion.
I also like the German tendency to over-engineer things to a point when they are so good, they're worthless for the use they were designed for