You can open a channel with my node (PaulsCode LND). The minimum channel capacity is set at 10K sats (though I think in practice, you can’t go much lower than 60K sats or you will get an error related to the dust limit).
My routing fees are set rather high (1%) so that I can manage the many small channels that open up to mine. This means if you are only using Core Lightning as your node (rather than leveraging both Core Lightning and LND) you will need to configure Core Lightning to use Xpay before you’ll be able to open inbound liquidity (since the default routing has problems with higher routing fees). On Start9, you can enable XPay via Config > Advanced > Experimental Features > Xpay.
If you plan to expand your Lightning usage beyond mining, then I recommend configuring both Core Lightning and LND as I describe on a few other threads (such as this post here).