If I'm correct, LoyceV sometime ago had shared one way to track ChipMixer input by grouping them into 2 mBTC, 4 mBTC or something which I can't exactly remember.

I thought of another use: what if you wanted to know how many addresses might be ChipMixer chips? They have specific sizes of 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096 or 8192 mBTC. A quick search (using yesterday's address list) shows:
1 mBTC: 266408 addresses
2 mBTC: 66301 addresses
4 mBTC: 30343 addresses
8 mBTC: 15695 addresses
16 mBTC: 8290 addresses
32 mBTC: 3894 addresses
64 mBTC: 1797 addresses
128 mBTC: 1167 addresses
256 mBTC: 595 addresses
512 mBTC: 259 addresses
1024 mBTC: 442 addresses
2048 mBTC: 120 addresses
4096 mBTC: 139 addresses
8192 mBTC: 59 addresses

Why don’t you instead allow users to have their desired input of any amount; not tied with 2 mBTC, it can be 0.00256 BTC as well. I'm not sure such things existed in ChipMixer or not; I can't remember exactly as I had checked out long ago.