Hi Nadia,
Here are some references that may help you find what you are looking for. There have been quite a few environmental sound research projects in recent years including some focused on memory and cognition, so I am sure there is more...
Shafiro V, Sheft S, Norris M, Spanos G, Radasevich K, Formsma P, et al.
(2016) Toward a Nonspeech Test of Auditory Cognition: Semantic Context
Effects in Environmental Sound Identification in Adults of Varying Age
and Hearing Abilities. PLoS ONE 11(11):
e0167030.
https://doi.org/10.1371/journal.pone.0167030
Shafiro V, Sheft S, Kuvadia S, Gygi B. Environmental sound training in cochlear implant users. J Speech Lang Hear Res. 2015;58(2):509-519. doi:10.1044/2015_JSLHR-H-14-0312 (Sounds can be provided upon request)
Yang, W., Makita, K., Nakao, T. et al. Affective auditory stimulus database: An expanded version of the International Affective Digitized Sounds (IADS-E). Behav Res 50, 1415–1429 (2018).
https://doi.org/10.3758/s13428-018-1027-6
Another excellent resource is
https://freesound.org/ but you will need to spend time seething through and finding what you are looking for and ensuring quality.
I would also be interested in learning about other databases that exist.
Best of luck with your project!
Valeriy