eBay Links:
B0505S-1W DC-DC 5V Power Supply Module 4 Pin Isolated converter NEW Z3 http://www.ebay.com/sch/?&_nkw=5v+isolated+converter http://www.ebay.com/itm/-/252029953042
Digital LCD TDS EC TEMP PPM Meter Tester Filter Pen Stick Water Quality Purity http://www.ebay.com/sch/?&_nkw=tds+ec+tester&_sacat=0 http://www.ebay.com/itm/-/371687611511
2pcs 0.9V-5V to 5V DC-DC Booster Module USB Mobile Step-up Power Supply Module http://www.ebay.com/sch/?&_nkw=5v+booster+usb http://www.ebay.com/itm/-/141870592094
INA219 I2C Bi-directional DC Current Power Supply Sensor Breakout Module http://www.ebay.com/sch/?&_nkw=ina219+module http://www.ebay.com/itm/-/201428308380
Digital LCD Indoor Temperature Humidity Meter Thermometer Hygrometer http://www.ebay.com/sch/?&_nkw=lcd+hygrometer http://www.ebay.com/itm/-/201613733543
Digital Cigar Humidor Hygrometer Thermometer Round Black Face http://www.ebay.com/sch/?&_nkw=round+hygrometer http://www.ebay.com/itm/-/401157697148
Flexible Stranded of UL-1007 24 AWG wire cable Yellow/Blue/Red/Black 10M 300V
http://www.ebay.com/sch/?&_nkw=24awg+wire+stranded http://www.ebay.com/itm/-/311692117311
microcontrollers PICkit2 PIC KIT2 debugger programmer for PIC24 PIC32 PIC dsPIC
http://www.ebay.com/sch/?&_nkw=pickit2
http://www.ebay.com/itm/-/201325676677
PICkit3 PIC KIT3 Debugger Programmer Emulator PIC Controller Development board
http://www.ebay.com/sch/?&_nkw=pickit3
http://www.ebay.com/itm/-/361369962637
Hmm, generating all those search links took a while!