https://getalby.com/ is a great custodial wallet browser extension. You get a LN address automatically which you can then add on your nostr profile. Most nostr clients also support Nostr Wallet Connect with Alby which enable one tap zaps without leaving your nostr client.

You can also connect it to Zeus wallet on mobile to manage it on the go.

But we only recommend that for small amounts and convenient tipping on nostr. Generally speaking a non-custodial option is recommended for anything beyond pocket change.