What to plant in a narrow bed along a garage?

These are already some great suggestions! Thank you all very much.

To be honest, we had also thought about grapes. However, there isn't much sun there. It's so-so!

What does "so-so" mean? A cardinal direction or hours of sunshine would be helpful as information. And does the spot get wet when it rains, or is it in the wind shadow and everything stays dry there?

Red is basically the neighbor's garage and green is the planting strip.

Grapevines require a trellis, right? Unfortunately, I can't attach one to the garage. There is external thermal insulation composite system (ETICS) in general. I don't want the plants to damage this. How do grapevines behave in this regard?

The entire alley is about 3 meters wide. Accordingly, there is wind there. I find it sheltered from the wind there, and from 12 o'clock to 6 p.m. the sun should be shining there in summer.

Here is the sun path from 01.07.2020 with the buildings drawn in. The bed is located at the neighbor's garage.

Do you want to make the garage relatively disappear or is the main thing that the strip is gone?

I would say too shady for grapes.
You can also sink trellis into the ground without going to the WDV.

I don't have to make the garage disappear. It would be partly a nice side effect. Otherwise, it would be enough for me to just make the strip disappear.