If you don't want to donate them to anyone, make a driveway edge, fence or give them away on BR, why not just leave them at the center in a rack ? Some bowler may well want to use them. Here anyway, open bowlers have a hard time finding balls that half way fit, might help someone out, never know.
Personally, I have a walk way lined with old cracked useless balls leading to the shop. Starting to find old pins as well, ball..pin..ball..pin, just something different.
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az guy aka: R & L Bowlers Pro
rlbowlerspro@cox.net