well, the way i see it, if I just buy and hold bitcoin, I get absolutely nothing from this as far as experiences or future memories are concerned.
Let us hope your future memories are not plagued with people pointing out the financial folly with respect to rationalizing such purchases.
if bitcoin becomes a pile of digital dust (hopefully, not), then at least you can remember those days
... where you bought low, hodl'd, and sold a fraction of a Bitcoin at some future date at way more than you could have imagined.
So, I will try to use something for mining and/or learning, maybe a fancy stick, or a needlessly criticized "bitcoin computer" or something else entirely.
As long as you go into it with the understanding that you are not going to make back whatever you spent on the device - not placing any value on any "fun" or learning you would derive from the purchase - go hog wild !