https://support.secondlife.com/ics/support/security.asp
I was working with an object and I seem to have lost it.
This question often arises in one of the following ways:
* I dropped some jewelry on the ground and I lost it! How do I find it?
* I was flying a vehicle and I jumped out. Now it's gone! Where is it?
* I was moving furniture and suddenly it disappeared! Now what?
There are several easy things you can try, so don't worry!
* If the object is relatively large, it will appear as a light blue
square on your Mini-Map. Click the Mini-Map button at the bottom of the
Second Life window if you don't have that up. Fly around and see if
anything matches. If it's in sight, you know what to do!
* Can you
remember what the permissions on the object are? If it's "no copy"
it'll be a little bit trickier, but if it's copiable(vehicles often
are), don't worry: Just get another one out of your inventory. Chances
are someone else will find it on their land and return it to you.
* You may want to consider politely letting the creator of the lost
item know of your tale and maybe they can help you with a free
replacement. It's worth a try! Try sending them an IM, even if they're
offline.
* Beacons can help you find objects with special properties: For
example, a physical ball that fell down a hill, or a box that keeps
playing a sound that you can't quite locate. Select View >Beacons.
Also, View > Highlight Transparent will help you find objects that
are see-through.
* If you think it's lost in your house, you may want to consider
carefully moving walls around. Sometimes furniture or even thin things
like portraits or paintings get hidden because they were accidentally
moved into the middle of a wall. To do this as the owner, right-click
on a wall, select Edit, and then use the colored arrows to move the
wall. You may need to click the Object tab in the Tools window and
uncheck Lock if you can't move it, but be VERY careful: Things can get
even more complicated if you misplace the wall, too.
* Select Tools > Select Tool > Edit and draw a selection
rectangle. Click-and-drag on an empty spot of ground with no objects,
or even in the sky, and you'll see a yellow shape grow as you continue
to move the mouse. This is handy for small objects because they'll be
highlighted and glow, making them easier to find.
* Open the Client menu. Deselect Client > Rendering > Types >
SurfacePatch. The ground will disappear. This can make it easier to
look for objects in some instances. Select it again to show the ground.
Other Client options may be helpful too.
* Some residents make object scanners you can use to specify parameters
and look for something -- think of them as metal detectors, only more
controllable. Use the Search window's Places tab to search for words
like "scanner".
Those are some things you can do. Good luck on turning lost into found!