Five Star Gift Ideas

How about:

1. A portable Bluetooth speaker: Your grandpa can enjoy his favorite techno tracks anywhere he wants with a good quality Bluetooth speaker. There are a lot of options available in the market under different budgets.

2. A Record Player: If your grandpa still has old records lying around or likes collecting them, gifting him a record player would be a great idea. He can listen to his favorite tracks on vinyl and relive the old days.

3. Techno Vinyl Records: You can also gift him some techno vinyl records of his favorite artists. This would give him an opportunity to expand his collection and discover new music.

4. DJ Course: If your grandpa is interested in creating techno beats, gifting him a DJ course or a music production course would be perfect. He can learn and enhance his skills in producing techno music.

5. Electronic Gadget: If your grandpa loves gadgets, then you can gift him an electronic gadget such as a mini synthesizer, sampler or drum machine that would allow him to create his own techno music.

Remember, the gift should be according to his interest and not necessarily his age. I hope this helps!

Or you can get him a star map with an important date you share.