Permissible recreation in the mosque, while observing purdah

عَنْ عَائِشَةَ، قَالَتْ رَأَيْتُ النَّبِيَّ صلى الله عليه وسلم وَالْحَبَشَةُ يَلْعَبُونَ بِحِرَابِهِمْ‏.‏

Hazrat Aisha^ra narrated, “I saw the Prophet^sa while the Abyssinians were playing with their spears.”

(Sahih al-Bukhari, Kitab as-salah, Bab ashabi l-hirabi fi l-masjid, Hadith 455)