Decorating the walls in a rental?

Decorating the walls in a rental?

Hello! I live in an apartment and they aren't cool with me painting, or putting holes in the walls, so I was wondering you you guys have any ideas for decor? I read about using liquid starch to hang fabric, but I'm having a lot of trouble with it! I just hate these nude walls--it echoes in here!
Crocuses

Crocuses

flower bed direction

flower bed direction

My 50’s mexicana/ religious/ dia de los muertos kitchen is DONE!!

My 50’s mexicana/ religious/ dia de los muertos kitchen is DONE!!

my new room

my new room

Edible Kudzu

Edible Kudzu

The very first thing I planted this season.

The very first thing I planted this season.