This is completely inspired by/stolen from my favourite blog.
I got these flats for £4 with the intention of putting the ribbon inside to tie across the top but instead I just used the loop of ribbon that was already in the back of the shoe (which happened to colour match perfectly) to slip the ribbon through and tie at the front or side.
There was also a bow at the front that I just unpicked. Simple and super springy cute. Now I just need a nice mint coloured dress to go with them.