The Big Question

Here is the big question I have been thinking about for days:  Do I buy a second seam ripper? 

You see, I used mine over the weekend, but it has gone missing. I searched my sewing space, under furniture, etc. I thought maybe the cat thought it was a toy and batted it under baskets, etc.  Nope, not there. 

I am not a person surrounded by clutter.  This is important on two fronts: 1) I do not want a second anything until I am sure the first is broken or gone and 2) I am tidy enough that I should be able to find lost things quickly.

So, here is the question: Do you generally have doubles of important things like seam rippers or rotary cutters?  Where do you draw the line between keeping well supplied and running out of space in your sewing room?

Note: I would put a little picture of a seam ripper here to brighten up the blog, but I can't find it :)