If you are not in the USA, the easiest and cheapest is wallet of Satoshi.

Add your LN address (looks like an email address) to your profile.

**Disclaimer** Wallet of Satoshi is a custodial wallet so don't leave any amount you care about in it because it can be taken by them at any time. 

 I'm in the US. But thanks! Might be handy to know sometime 

 #asknostr what lightning wallet is best for a zap wallet for people in USA? 

 Minibits.cash works.