The story of homework

ok so me and the wifey have been back together for almost a year now. and in that year we have had so great sex. form just dirty sex to role play to tied up it has been great. but i have always been trying to keep her doing something when i am not around. and with her job she is not aound as much as i would like now. so what i do is give her things to do like play with her self till she cums x times or take pics or play in a place or certain postion. but i am out of things. i can only tell her to cum so many times so i need more thoughts. right now she has no toys but i want to here anything you have.