ideas for long-term small-cap investments

I meet plenty of wealthy investors who seem to think it's unwise to invest in companies with a market cap of less than $200 million or so.

Obviously I disagree - I seldom purchase shares in companies with a market cap of higher than $200 million, aside from the odd exception.

I'd like to hear some more ideas for long term gains in the sub $150 million market category

I expect to see the usual suspects mhm, ado, bcc, ccc, cgm, poh, prr, pen, avb, cfu, ssn etc but would be good to see a few more obscure names.

A few that I've recently invested in are below, in no particular order.

NHO
CRC
PGI
JAT
LMG
CPZ