Probably with River on the exchange account so they set up an account and then they are set up to start buying more.

I’m trying to get people to actually buy their own DCA instead of some gifting non-KYC Sats on an app or sats card that they will never figure out how to use.

Printed ecash token qr codes with a short manual? If on-chain: Write a poem where the 12/24 words of a seedphrase are marked in it.

https://satscard.com/

do it as a qr code to an nwc getalby with 100k sats starting on it. they just gotta scan with alby go and they lightning'ing with their own fully functioning wallet custodied on your node. PLUS, when they dont use the sats and/or lose the qr code or access to the wallet, the sats will just still be on your lightning node so nothing is lost.

this is the best practice imo, everything else is a waste especially if thy never asked about btc before.

https://satochip.io/ pretty cool device , great learning tool as well