these squishy pen grips are from my last trip to kinokuniya in new york but you can find similar ones at most office supply stores. wrap enough medical tape around the handle of your hook to ensure that the pen grips fit snuggly and won't move while you work. slip your grips over the tape and you're done! i use two grips per hook and the placement of your grips will be determined by how you hold your hooks. here's to many more happy hours of crocheting!
*edit - replaced the photos with brighter ones... the first ones were taken on a stormy day. hello sunshine!