The circuits found inside cheap electronic toys, especially sound toys, can become very useful when you want small circuits. You can not customize them as much as planning and programming your own, but these come cheap, quick and easy to cut down to a bare minimum and embed in a garment.
Example projects that use cheap electronic sound toy circuits are:
>> Wearable Sound Experiment
>> Wearable Toy Piano
>> Piano T-Shirt
Sound Recording & Playback Modules
Radioshack 9V Recording module (USA)
>> http://www.radioshack.com/product/index.jsp?productId=2102855
Conrad (DE)
10 seconds
>> http://www.conrad.de/ce/de/product/191184/Grusskarten-Tonaufzeichnungsmodul-10-s-Baustein-45-VDC-Aufnahmezeit-10-s
Alibaba (China)
>> http://www.alibaba.com/showroom/voice-recording-module.html
ISD1820
>> http://www.elecfreaks.com/2215.html
10 seconds (no speaker), Deal Extreme (China) >> http://dx.com/p/isd1820-voice-recording-playback-recorder-module-board-167092
10 seconds (no speaker), via Ebay (China) >> http://www.ebay.de/itm/3-5V-ISD1820-Module-Voice-Recording-Playback-Mic-Sound-Audio-For-Arduino-UNO-PI-/390620630966?pt=Wissenschaftliche_Ger%C3%A4te&hash=item5af2cdcfb6
Amazon DE
>> http://www.amazon.de/Aufnahme-Abspiel-Modul-f%C3%BCr-Gru%C3%9Fkarten-Sekunden/dp/B008BHDS1M/ref=pd_bxgy_ce_img_z
>> http://www.amazon.de/Your-Design-Gru%C3%9F-Modul-Geschenkp%C3%A4ckchen-Aufnahme/dp/B0068GXHJ6/ref=pd_bxgy_ce_img_y
>> http://www.amazon.de/Your-Design-Aufnahme–Abspiel-Modul-Gru%C3%9Fkarten/dp/B004S9IQ5U/ref=sr_1_1?ie=UTF8&qid=1374764661&sr=8-1&keywords=ton+gru%C3%9Fkarte
From local toy store
Toy Pianos
Schylling
Used in Piano T-Shirt Workshop.
>> http://www.schylling.com/mm5/merchant.mvc?Screen=PROD&Store_Code=SD&Product_Code=MEP&Category_Code=S-MUSIC
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