I have a lot of fun with these lenses: https://www.microphonelens.com/ https://www.microphonelens.com/ They're so small that you can always have them with you

I have a lot of fun with these lenses: https://www.microphonelens.com/ https://www.microphonelens.com/ They're so small that you can always have them with you to look at specimens on the spot, especially useful during walks in nature. Bought several of them as gifts as well, can recommend!