Toys or electronics for learning to read?l

My 4 almost 5 year old is very interested in learning to read. We are working on letter sounds and sounding out words and she is doing great she’s very smart and would love to be doing it more often but my youngest is very clingy and we do a lot of other activities too so I’d love to have something she could do independently sometimes. I was looking at the leapfrog learn to read books and pen pack and considering that. Does anyone have any recommendations?