I'd be torn on what to do with that thing too. I'm sure it's worth $$$ but the sentimental value and fun factor.. yeah, I'd use it to roll around but just being careful to not run into stuff.
On a side note..
I've got a hand me down Powell Quicktail 69cm. Yep, the aluminum one with a tiny kick tail.
Fairly good condition, still has griptape. Anyone know what it's worth?
The Quicktails are worth more than the more common Quicksilvers, which were a slalom board with no kicktail. The only one that's sold when I search on USA Ebay went for an offer less than $700, but can't see the exact amount. It had the original Bones wheels from the 70s, and Trackers, which would probably go for around $200 max, so it's got to be a $300 deck, and the Ebay one wasn't in very good condition.
Are you in France, I think I recall you are? Not as many collectors there. I used to follow French Ebay and buy stuff that I could sell for more in the UK, where there's a bigger market. Need to stick on Ebay USA to get the best price.