• Adafruit
• Banggood
  
• DGH
• Electronics DIY
• Gearbest
• Circadea
  
• C & H Sales
• Electronic Goldmine
• Surplus Shed (optics stuff)

• American Science & Surplus
• All Electronics Corp.
• Herbach & Rademan H&R Surplus
• Ramsey Electronics
• Fair Radio Sales
• Maplin
  
• Marlin P. Jones
• Surp. Sales of Nebraska
• BG Micro
• Joe Knows, cheap resistor kits etc.
• Skycraft Surplus
• Surplus Traders (large)
• SCROLL DOWN, lots more

• Am. Science & Surplus, hilarious catalog
• Archie Mcphee, glow-in-dark roaches, tiki lamps, boxing nuns.
• Johnson Smith tricks, gags, costumes, amazing stuff
• stupid.com

Amazon
Sustainable Supply
Global Industrial

Large qty

• Surplus Traders
• Dovebid
• Ali-express
• Alibaba: electronics
• Govt Liquidation
• DOD surplus