Sparkfun

US$5.88
They have a very fine tip which allows you to pick up very small parts with precision. This is a great tool to have if you're working with surface mount components or anything with very small parts. The ESD-safe coating will also help prevent electro-static damage to sensitive electronic components.
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US$1.33
TRRS connectors are the audio-style connectors that you see on some phones, MP3 players and development boards. TRRS stands for "tip, ring, ring, sleeve," which reflects the fact that, unlike a standard stereo connector, this actually has three conductors and a ground.
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US$15.25
This durable roll up tool bag provides you with 23 pockets to store your, pliers, flush cutters, hand-held soldering iron, spent uranium rods, screw drivers, and other small hand tool that you might need to complete a project. It even has 15 elastic loops concealed underneath a flap for storing small tools.
Delivery within 2-3 weeks
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US$8.19
Each pack includes 25 tiny green 1206 SMD LEDs in cut-tape packaging. These are great for status lights or for building really small LED matrices.
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US$8.78
Each pack includes 25 tiny white 1206 SMD LEDs in cut-tape packaging. These are great for status lights or for building really small LED matrices. 
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US$6.93
Eeach pack includes 25 tiny blue 1206 SMD LEDs in cut-tape packaging. These are great for status lights or for building really small LED matrices.
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US$4.97
Each pack includes 25 tiny red 1206 SMD LEDs in cut-tape packaging. These are great for status lights or for building really small LED matrices. 
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US$6.93
It has 2 power buses, 30 columns, and 10 rows - a total of 400 tie in points. All pins are spaced by a standard 0.1". The two sets of five rows are separated by about 0.3", perfect for straddling a DIP package over. The board accepts wire sizes in the range of 29-20AWG. Dimensions: 3.29 x 2.15 x 0.33" (83.5 x 54.5 x 8.5mm).
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US$8.33

These SparkFun needle tipped multimeter probes are great for attaching to multimeters, power supplies, oscilloscopes, function generators, etc. Dimensions: 36" Long.

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US$90.93
This is very similar to our BlueSMiRF modem, but it is designed specifically to be used with our Arduino Pros and LilyPad Arduinos. These modems work as a serial (RX/TX) pipe, and are a great wireless replacement for serial cables. Any serial stream from 2400 to 115200bps can be passed seamlessly from your computer to your target. We've tested these units successfully over open air at 350ft (106m)!
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US$14.46
This is a bare non-addressable 1 meter long RGB LED strips that come packed with 60 WS2801s per meter.
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US$33.85

These are bare addressable 1 meter long RGB LED strips that come packed with 60 WS2812s per meter. As these are bare LED strips that have no protective coating, your project won't be water proof but there is access to each WS2812 LED and each strip length can be easily modified.

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US$153.93

These are bare addressable 5 meter long RGB LED strips that come packed with 60 WS2812s per meter. As these are bare LED strips that have no protective coating, your project won't be water proof but there is access to each WS2812 LED and each strip length can be easily modified. You will be able to control each LED RGB individually giving you the ability to create cool lighting effects for your car or perhaps under cabinet lighting in your kitchen!

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US$5.53
With 170 tie points there's just enough room to build and test simple circuits; They're also great for breaking out DIP package ICs to jumper wires! If you run out of room, no worries, these mini breadboards can be snapped together to form larger stretches of board. Dimensions: 47 x 35 x 10mm.
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US$5.53
With 170 tie points there's just enough room to build and test simple circuits; They're also great for breaking out DIP package ICs to jumper wires! If you run out of room, no worries, these mini breadboards can be snapped together to form larger stretches of board. Dimensions: 47 x 35 x 10mm.
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