My goal while making this was to do it for as little money as possible, so I will try to lead you on how to do that too. This one was under $20 in total parts, and half of it was stuff I already happened to have around the house.
Step 1: Parts And Tools.
Keep in mind before you start, the more gallons the pump is rated for, the more suction it would have. This is a $11 pump rated for 60 gallons at most. The Whisper goes up to 100 gallons and would give you slightly more suction, but that pump is around $20. They also make pumps for ponds and larger tanks for around $40 and up, but I have no idea what kind of pumps they use in those at this point in time and if you can flip a gasket as easily. At this time I also don't know if hooking multiple smaller pumps would get you better suction or not.
I'd say the Aqua Culture is good for smaller things like beading and small electronics like resistors. But if you want to pick up larger items, I'd look at the Whisper 100 and some suction cups to go with it, which are discussed near the end.
1 Aqua Culture duel air pump.
1 Standard airline tubing. At least 3 feet or longer.
1 Airline T-Valve
1 Air Flow Control Valve
1 Alligator Clip
1 Inflation Needle
2 Small Screws
1 Pen with rubber grip.
1 Pen that fits comfortably in your hand.
Tools and Supplies:
Philips Screw Driver
Drill and Saw or a Dremel Tool
Toothpicks (for applying the epoxy)