An HP or Dell USFF PC would be a great alternative. Something like an OptiPlex 7010 or 800 G2. You can pick them up for $50 used, if you need more power you can

An HP or Dell USFF PC would be a great alternative. Something like an OptiPlex 7010 or 800 G2. You can pick them up for $50 used, if you need more power you can add as large of an SSD as you want plus 16GB of RAM, they're small and quiet and can run Linux.