If you need to expand your Mac storage in a big way without breaking the bank, your best bet is with external hard drives.
SanDisk's Crayola 5Gbps USB (Type-C) drives are colorful, fun, and good for kids. However, capacity is limited to 256GB and ...
Samsung's T9 SSD offers up to 4TB of storage with transfer speeds of up to 20Gbps - in an ultraportable form factor.