There's a Quick Drop keyboard shortcut somewhere on this site which allows you to select a piece of code and automatically create a merge VI out of it, which is in the palletes. This isn't the same as having the snippet itself visible in the palette, but it do at least some of the work you probably want here.
>> There's a Quick Drop keyboard shortcut somewhere on this site [...]
Jim You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice For he does not know what will happen; So who can tell him when it will occur? Eccl. 8:7