Art supplies, if they are within your budget a small set of stockmar crayons will last her entire childhood.
A new balloon
Some fancy balloons, or bring her one once a month. My kids would love to have a "balloon aunt."
Again, depending on your budget, some cutting food http://www.amazon.com/gp/product/B000I8UK04/ref=pd_lpo_k2_dp_sr_1?pf_rd_p=486539851&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B002C04YEE&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=0ADDY98V32YRF4B2VZ99
If you are on a very tight budget, some stickers and chalk and bubbles or a ball from the dollar store