Rk Education 555 Timer Beginners Electronic Kit Including PCBs & Components Great for Makers, GCSE, BTEC and A Level Students : Amazon.co.uk: Business, Industry & Science
The Three Fives Kit: A Discrete 555 Timer
Balmac 555-Kit-A Remote Vibration Switch with 25 foot cable and NEMA 4X Enclosure
Build Your Own Giant 555 Timer Chip - IEEE Spectrum