A set of pictorial stimuli generated by combining five cartoon characters with four five-valued attributes is presented. The attributes are different hats, clothing, gadgets, and shoes. The stimuli can be used in various cognitive research areas like categorization, multiple cue probability learning, judgment, memory, or metamemory. The nonverbal nature is intended to make the stimuli suitable for research with children and adults alike. Study 1 assessed the similarity structure and attribute salience through pairwise similarity ratings, resulting in a salience ordering of cues. This attribute salience, in turn, predictably affected multiple cue probability learning in the judgment task of Study 2. Finally, Study 3 varied similarities (as assessed in Study 1) between distractors and targets in a recognition memory task, yielding the predicted effect of lower performance when similarity is higher. Hence, similarity measures and attribute salience values are psychologically valid. The freely available set (https://osf.io/dq2k8/) allows for a rational selection of stimuli when controlling for these aspects is desirable.