Can anybody suggest hardware how to build led flame bulb, which gives the flame effect.

 

There have been a number of recent threads about using the 8 pin ATtiny85 microprocessor on this forum which you might like to look at. You could have one output pin driving an LED turned on and off with quasi random numbers of milliseconds between on and off. The off periods should be shorter than the on periods. I can’t think of a way to make a 555 astable to blink an LED except with on and off periods of fixed values which would be unrealistic

 

Welcome to AAC.

Big Clive (YouTube) is the premier source for information on LED lamps, including specialist items. He has covered several flame effect LED lamps over the years with teardowns, analysis, and schematics.

The video below is an example, but you should check his channel for more. It is definitely the best place to start.

 

I suspect the cost of parts to build one would be more than the price of a commercially available one.
Is this intended to be a mains voltage bulb?

 

What voltage is available for a commercial unit, if that will satisfy your needs? Here is a commercial unit that might work for you.