Electrical and Computer Engineering

I am working on some extremely small designs where the entire board is less than 15mm2. There are a surprising amount of very small ICs but I've found it's really tricky to actually do a thorough part search for tiny (sub 2mm x 2mm) parts.

Some vendors have CSP packages that are relatively huge while having other package types like X2SON which are actually smaller. What was called 'tiny' and 'smallest' a few years ago is actually pretty large by today's parts.

Any tips on how to find parts?