Positive Tests.... Treasure or Trash?

Sooo.. I haven't seen this question asked yet.. And I'm curious. While looking at some wonderful shadowbox ideas for baby keepsakes (ultrasound pics, hospital bracelets, babys first outfit) i came across a couple that had the actual positive test in among the rest of the items. So that got me wondering, am i supposed to keep it forever? Of course its still in my sock drawer so i can look at it anytime i need to to remind myself that this is really happening.. But should they be framed?? Whats everyones opinions on this! Did you keep yours? Where do you keep it? Why SHOULD/SHOULDNT you keep your tests as a keepsake?