I had the same phenomenon with a cluster of eight SBCs that I turned into small super-computer. I used it to learn parallel computing and Beowulf clusters.
My advise: listen to your curiosity… what do you need to learn next? Where is your curiosity taking you? Maybe ask a mentor for advice on what skills are important to learn next? You might find the next set of skills are complex, human systems skills not computing skills. Some things might be: communicating complex problems and solutions such that they are sponsored for investment, or teaching others a skill you have mastered.
I had the same phenomenon with a cluster of eight SBCs that I turned into small super-computer. I used it to learn parallel computing and Beowulf clusters.
My advise: listen to your curiosity… what do you need to learn next? Where is your curiosity taking you? Maybe ask a mentor for advice on what skills are important to learn next? You might find the next set of skills are complex, human systems skills not computing skills. Some things might be: communicating complex problems and solutions such that they are sponsored for investment, or teaching others a skill you have mastered.