Here are some stimuli I've used in my research. Feel free to download and use these in any of your academic research. If you do, please consider citing the source.
Object stimuli from Addleman, D. A., Rajasingh, R., & Störmer, V. S. (2024). Attention to object categories: Selection history determines the breadth of attentional tuning during real-world object search. Journal of Experimental Psychology: General. https://doi.org/10.1037/xge0001575. Open Materials.
96 objects, 12 from each of eight categories, all 500x500 pixels with no backgrounds
Categories include plants, dresses, chairs, light bulbs, coffeemakers, purses, pianos, and water bottles.