Hellobee Boards

First, find out what ponies she has and maybe who her favorite pony is. They have pony books, clothing, etc. that would be good. My daughter also likes blind bags. Her favorite is Twilight Sparkle.

If she's into dress-up, you could get her a pony costume! I also saw some dresses that I want to get my daughter, I'll link them here.

This one has wings on the back like Rainbow Dash: https://www.amazon.com/My-Little-Pony-Rainbow-Turquoise/dp/B01L9W5BBU/ref=sr_1_2?ie=UTF8&qid=1496678097&sr=8-2&keywords=My+little+pony+dress

https://www.amazon.com/My-Little-Pony-Twilight-Sparkle/dp/B01L7I3A96/ref=sr_1_2?ie=UTF8&qid=1496678160&sr=8-2&keywords=My+little+pony+dress+Twilight+sparkle

https://www.amazon.com/My-Little-Pony-Hoodie-T-Shirt/dp/B01DMP9RRQ/ref=cts_ap_2_vtp?pf_rd_m=ATVPDKIKX0DER&pf_rd_p=2897711222&pf_rd_r=45XKWVD4J9XNNPPX5BDQ&pd_rd_wg=aiS4B&pf_rd_s=desktop-detail-softlines&pf_rd_t=40701&pd_rd_i=B01DMP9RRQ&pd_rd_w=3AuWH&pf_rd_i=desktop-detail-softlines&pd_rd_r=45XKWVD4J9XNNPPX5BDQ&_encoding=UTF8

Agree with pp that you need (ideally) to find out which pony is her fave.

This playset gets the most play at our house of all the MLP toys LO has: http://www.toysrus.com/product/index.jsp?productId=86170796&gclid=CjwKEAjwgtTJBRDRmd6ZtLrGyxwSJAA7Fy-h6fnYYu0vI6RAdgrDgcrTct0rLRYnci3ip2ieD8ZZ_xoCATjw_wcB&camp=PLAPPCG-_-PID23515906:TRUS&cagpspn=plat_23515906&eESource=CAPLA_DF:86170796:TRUS