Flexible Childcare Needed For Fun Active Toddler & Preschooler

I am a SAHM who also works part time from home. I need someone with a lot of flexibility to help with childcare for my 19mo old daughter and 4yr old son . My son goes to a co-op preschool in the afternoon & I work in the classroom Tuesdays. I need someone to watch the 19mo old during that time, and sometimes watch both kids while I work. Hours can be flexible based on needs. I'm open to either morning or afternoon schedule on days I am not in the class. My kids are both very active and love being outside. I need someone who enjoys taking them out (rain or shine) and engage in a lot of imaginative play. They are high energy and need someone who meets them in their energy and engages in play. Additional tasks include light housekeeping as needed. Approx 4-15 hrs/wk +/- . Pay rate varies depending on number of children.