The grandmother celebrated the homecoming of the author in a grand manner. She was overjoyed to see her grandson after a long time and wanted to make his visit memorable.

Preparations for the Celebration:
- The grandmother had prepared a sumptuous feast for him with all his favourite dishes.
- She had decorated the entire house with flowers and lights to create a festive atmosphere.
- She had also cleaned and spruced up the house to make it look welcoming.

Welcoming the Author:
- The grandmother had dressed up in her best clothes and had worn her favourite jewellery to welcome the author.
- She had hugged him tightly and showered him with kisses to express her joy at seeing him again.
- She had also prepared a traditional welcome drink for him.

Feasting and Celebrating:
- The author was treated to a feast fit for a king. The grandmother had cooked all his favourite dishes and had even tried new recipes to impress him.
- The entire family had gathered to celebrate the occasion. They had shared stories, laughed and enjoyed each other's company.
- The grandmother had also arranged for some entertainment. She had asked a local musician to play some music and had invited some neighbours to join in the celebration.

Parting Gift:
- Before the author left, the grandmother had given him a parting gift. She had knitted a sweater for him and had also given him some money as a token of her love and affection.
- She had also blessed him and wished him well for his future endeavours.

Overall, the grandmother had gone out of her way to make the author's homecoming a memorable one. Her love, warmth and hospitality had touched his heart and had made him feel loved and wanted.

The grandmother celebrated the homecoming of the author by singing songs loudly and playing musical instruments specially dholak. She collected the women of the neighborhood and started to sing loudly.
Hope this helps you!