There are many small gem projects ,i have seen many performed well and some collapse due to some factors that were beyond control of traders and team. I still have some in bag and some as favorites. They include
- DIA
- Dego finance
- Poolz (it will be listed tomorrow)
- Polkadot
This are mine favorite, it shouldn't be taken as financial advice though.
i think polkadot is not a kind of small project my friend
because this altcoin be a part from Top altcoins in the market now, i think if the OP find a small cap project but promissing its very hard now