Hey mamas can you ladies give me ideas on what Olivia can play with besides her toys? I feel so bad…

Hey mamas can you ladies give me ideas on what Olivia can play with besides her toys? I feel so bad lately. We take her out and to the park, shopping, for walks, etc. We play with toys at home, but I feel like she is getting really bored. All her toys are developmentally appropriate and she has more than enough of them. I just feel like she isn't stimulated enough. She's really into sensory exploration right now, but aside from letting her touch the environment around her when we are outside, I don't know what to do :/