Will Christians appear before their god on final day of judgement with cross, nails and hammer ?

No, It's been done already.

Christians are saved therefore they do not appear to be judged on Judgement Day. Our sins are already forgiven by the blood of Jesus, so we automatically go into Heaven.

It's only those who have rejected Jesus who get judged.

No Christians will appear at the judgment seat of Christ and Jesus will have the nail prints in His hands and feet and forgiveness in His judgment for all sins.

if they do they will find out he was nailed to a stake not a cross

I think nothing is written like that in the Holy Bible.

He let the people do that to him, but in all honesty, the fact is that not one Christian took part in his crucifixion! not technically anyway.

Yes. And with a smile on their face.

I was planning to bring a pot of tea.

No. They will be dead like the rest of us.