New gear is always a good idea! Who doesn't like new toys

A looper would be a great addition. Mine is a Boss RC3. Its a bit on the pricey side but I like the brand and its built like a typical Boss product.

But do some research on what different models provide. The RC3 has several drum beats which aids my timing (and fun), 99 storage banks, variable volume for loop playback and drum track.

Good luck with what you choose. Looper pedals are fun to play with and great practice tools.