Birthday present or activity when in Japan

I�fm traveling with my husband to Japan for the second time. His birthday will be when we are in Tokyo (15th and 16th October). I would like to surprise him with a Japanese gift. I was thinking of a show of some kind, but we don�ft speak any Japanese. Budget around $100.
Any recommendations?

I wonder if you might want to take him to the Robot Show in the Shinjuku area. I honestly have never attended it, but I hear it is certainly unique to Japan. You can view videos of it on YouTube.
Maybe other members of this forum can weigh in with their opinions of this particular show.
Of course, if he likes Disney, a day at Tokyo DisneySea and staying to see the water show at night is also recommended. Just trying to recommend things that are unique to Japan.

The Robot Restaurant is fantastic in my opinion but it's certainly an acquired taste and for many it will be far too decadent. Definitely check some videos before you go because it's definitely not up everyone's alley.

If that doesn't appeal to you why not find out if there is any live music that interests you? No language skills required to enjoy that. I was going to suggest sumo but I don't think there is a tournament in October.

LOL,I was thinking of sumo also as another recommendation.
If you end up going to the robot show, look in most free visitor guidebooks for the Shinjuku area for discount offers to the show.