I created this Instructables in such a way that you can use the written instructions as well as the photos to follow along with the project.
DIFFICULTY: LOW - MEDIUM
TIME FRAME: Small weekend project.
PREREQUISITES: My instructions assume you know the basics of electronics and soldering. I don't explicitly go over how to solder but it may be a nice small project to introduce you to electronics.
Step 1: Parts, Materials, and Tools
A. Hummer Shake Flashlight (about $10 on eBay)
B. Universal Cassette Recorder Microphone (Catalog #: 33-3019)
C. Small 8 ohm Speaker (Catalog #: 273-092)
D. 8-pin Retention Contact (Catalog #: 276-1995)
E. LM386 Low Voltage Audio Power Amplifier (Catalog #: 276-1731)
F. PC Board (Catalog #: 276-150)
G. 220uF Electrolytic Capacitor (Catalog #: 272-1029)
H. 10uF Electrolytic Capacitor (Catalog #: 272-1013)
I. 10M ohm resistor (Catalog #: 271-1365)
J. 0.1uF Ceramic Capacitor (Catalog #: 272-135)
K. Plastic Cup
L. About 1.5' of wire, red and black each
M. 0.032" Rosin Core Solder (Catalog #: 64-009)
N. Electrical Tape or Duck Tape
A bit of corrugated cardboard (not pictured)
O. Wire Cutter / Stripper
P. Soldering Iron
Tin Snips (not pictured)
Scissors (not pictured)
Pen or pencil (not pictured)
Total Cost (assuming you have all the tools and materials, not parts): approx. $35
Note: Most of the parts can be commonly found at local RadioShack stores.