In the making of a project involving servos, the moment came to place them, but I had no servo holder on hand. There were no special requirements (such as immunity to vibrations), and I just hate the idea of directly glue servos.

Rather than bothering to order some holders, I looked around to see what I had at my immediate disposal.

Here is a quick and simple servo holder, out of an L-shaped PVC profile.

Step 1: Needed Stuff

Material:

PVC profile, L-shaped, a bit wider than the servo thickness
Screws (I have some screws scavenged from old computer cases)

Tools:

Miter box+saw
Dremel
Flat file
Drill
Cutter

Step 2: Cut Profile to Length

Use the miter box+saw to cut the PVC profile to desired length.

Step 3: Mark Hole

Align the servo, and mark its 3 sides with a pencil onto the PVC profile.

Step 4: Make the Holes

With the Dremel, carefully cut out the rectangular hole. You should in fact cut the edges from the outer side.

Finish off the corners, with the cutter. Rectify with the file.

Place the servo and mark the screw holes. Bore them, using a drill bit having a diameter that is slightly smaller than the screw's diameter.

Step 5: Optional: Groove

Because I planned to have the servo below the holder, I needed to make two small grooves to accommodate the servo's small brackets, which would otherwise generate a gap.

Again, the Dremel comes handy.

Step 6: Screws

Moderately fasten the screws into the holder. They will thread themselves directly into the PVC.

If you need more strength, or want to mount/remove the servo often, please use screws and nuts.