This is a (limited) list of websites that could be helpful in your search of resources for pe'ulot. If you have more suggestions, please e-mail them to
Primary resources 
Sefaria - an online liberary of classical Jewish texts
Da'at - an online encyclopedia for Jewish studies (Hebrew)
Jewish Virtual Library - an online library of Jewish studies 
Jewish Encyclopedia - Jewish online encyclopedia 
Rambi - Index of articles on Jewish studies
Yizkor books - Memory books of pre-war Jewish communities in Poland (Hebrew or Yiddish with English summary at the end)
Jewish Multimedia Library - Recorded lectures
Tnu'at Ha'avodah - Database of the history of the Israeli labor movement
Habonim Dror's chinuch databases
Youth movement recources - Games and icebrakers