Quantity   Component name
2 × Blue LED
1 × 555 Prototyping Products / PCB Chemicals
3 × 1 kOhm resistor
1 × 10 kOhm resistor
1 × 0.01 uF ceramic capacitor
1 × 10 uF electrolytic capacitor
1 × 9 V battery
1 × transparent silicone rubber WACKER E43-90ML