I like stick-on nail stickers.

I think getting manicures is a great way to lift your spirits in the summer. Since it's hard for me to find the time to go to a nail salon, I use nail stickers. I pick out designs I like and apply them to my fingernails and toenails; they last a long time because they are durable. My toenail stickers, in particular, don't fall off once applied, so I use them every summer to brighten my mood.