Few years ago I saw some faucets which used script from moonbit.co.in, but I dan't know, can it be bought or downloaded, because in recent years I didn't saw more faucets which are using this script.
Now I don't know any more faucet scripts, where reward accumulates by wating some yime between claims.
But you can check out full list of faucet scripts available now:
http://bitcoins4free.altervista.org/bitcoin-faucet-scripts/