depending on your client, you can add them to your public or private bookmarks. you can do this on Amethyst or Primal for example.
Discussion
Holy shoot I didn’t know you could do that! I’m on Damus, but for the technically illiterate plebs such as me, you click this button and there should be an “add to bookmark” option. 
I am drowning in bookmarks 🫠
Don't visit nostr:npub1048qg5p6kfnpth2l98kq3dffg097tutm4npsz2exygx25ge2k9xqf5x3nf it'll wipe your bookmarks 😂
Orly? nostr:nprofile1qqs8lft0t45k92c78n2zfe6ccvqzhpn977cd3h8wnl579zxhw5dvr9qpzemhxue69uhkvun9deejumn0wd68yvfwvdhk6qgdwaehxw309ahx7uewd3hkcqghwaehxw309anxjmr5v4ezumn0wd68ytnhd9hx2aezugp should be aware of this if that's the case.