(Image credit: Future) Celebrate Father's Day this Sunday, the 21st of June, by getting your pops a nice little tech gift for his collection. You can choose to go big or small with a range of gift ideas from a Bluetooth speaker to some smaller desktop gadgets and tools. If you're the dad, maybe you just need a minimal excuse to treat yourself to a little bit of retail therapy. We've curated 18 funky gifts, gadgets, and tools we think might give you a few ideas on something different to get dad on Father's Day this year. It can be hard to find something he doesn't already have or want, so these are some lightweight, yet original gift ideas that you can pick up and get delivered before Father's Day arrives.…