N5 Irregular Verbs

to come, to come (spatially or temporally), to approach, to arrive

くる / kuru: connect the sound to "crew". Picture a helpful crew arriving together in a scene for "to come" so the sound points straight back to the meaning.

to do, to carry out, to perform, to cause to become

する / suru: connect the sound to "sir, ooh". Picture a polite helper saying "sir, ooh!" before doing the task in a scene for "to do" so the sound points straight back to the meaning.