updated:Modding parts and idea's w links and pics expanding memory and Lighting.

[1TONpete]

I created this so maybe people might get some ideas for new mods or need help w a solution to a wiring problem , etc. This is just some of the stuff Ive come across. Please check out the stuff about memory.I think some of this stuff could be developed into cheaper extra capacity memory. I will update w more products and ideas . Feel free to post anything you find. Most of the stuff I've found is from the sparkfun site, I am very open to new sources. this is just one I know and trust.
     A voltage exchanger.5V signals to 3.3V and steps up 3.3V to 5V. This level converter also works with 2.8V and 1.8V devices.

http://www.sparkfun.com/commerce/product_info.php?products_id=8745
next is a Breakout Board for microSD Transflash. might be usefull.

http://www.sparkfun.com/commerce/product_info.php?products_id=204
This one is still a prototype but i like what he did w the microcontroller.MMC to Serial Adapter

http://homepage.ntlworld.com/seanellis/mmcserial.htm
The next one i think might really turn into something viable.How to support multiple SD devices using CPLDs

http://www.pldesignline.com/201801755?printableArticle=true
This next one might work for switching between multiple memory devices.IE: switching between sd and mspd. Breakout Board for PCF8575 I2C Expander

http://www.sparkfun.com/commerce/product_info.php?products_id=8130
SD card slot board

http://www.sparkfun.com/commerce/product_info.php?products_id=204
LED controller kit. multi colors w different effects.

http://www.sparkfun.com/commerce/product_info.php?products_id=9287
more LED stuff.Nightrider LEDS any one?

http://www.sparkfun.com/commerce/product_info.php?products_id=9286
Ambient Light Sensor - TEMT6000 could be mounted near the lcd and use it to controll LEDS.

http://www.sparkfun.com/commerce/product_info.php?products_id=8348
More LED effects on one chip and RGB LED.

http://www.sparkfun.com/commerce/product_info.php?products_id=8579
The last one for this post is a track ball that could be used instead of a second analog stick. Blackberry Trackballer Breakout.
 

http://www.sparkfun.com/commerce/product_info.php?products_id=9320.
Got some more stuff for expanding the memory of the PSP. This one is special. read up on it.Possibility of internal USB storage. Since it has the ability to be a host. this one I'm gonna order and see what I can develop. 
Breakout Board for DOSonCHIP FAT16 FAT32 uSD Module

http://www.sparkfun.com/commerce/product_info.php?products_id=8215
EL wire  Sequencer . EL wire makes some cool mods but takes a lot of power. But I thought this was cool.

http://www.sparkfun.com/commerce/product_info.php?products_id=9203
A simple rotory switch. Good for dimming the brightness of your LED's.
 
http://www.sparkfun.com/commerce/product_info.php?products_id=9288
the slide version of the same idea.

http://www.sparkfun.com/commerce/product_info.php?products_id=9119

[pigoesfar]

Yeah, this is a good idea.  It got me thinking of some cool ideas.  Thanks and let me know when you  add more.