As you enter Meiji Jingu Shrine from Harajuku Station and head towards the museum and the main shrine, you'll come across a place called Forest Terrace.
You'll see the entrance to Forest Terrace from the approach to the shrine.
There are many benches lined up under the eaves in front of the souvenir shop. You can use them even on rainy days.
Around the terrace, you'll find tables with an open atmosphere. You can enjoy your lunch or have a picnic, and it also seems like a great spot for remote work in Meiji Jingu Shrine.
There's a food court right next door, so you can take out food and drinks to enjoy.
You can also take a break under the eaves, away from direct sunlight.
There are also restrooms nearby, which is convenient.
In addition, the 2nd Terrace right next door is also recommended.
So, why not try using these rest spots around Harajuku Station?