Interview tomorrow!

So, I have an interview tomorrow and I have to plan a activity for 4 reception children and I was thinking of doing a race to fill a cup! So each child has a plastic cup and they have to take turns rolling a dice they have to count how many dots are on the dice and then they have to fill their cup with either multi link/pom-poms etc... so say they rolls 5 they have to fill their cup with 5 pom-poms... the only thing is I only have the plastic cups. Do you think it would be okay to ask to borrow a dice and the multi link etc? Or should I change activity as I’m not 100% prepared and could show I’m unorganised?