In my insomnia, I was cruising the Internet and came across this problem:
2+3 = 10
6+5 = 66
8+4 = 96
7+2 = 63
9 + 5 = ?????
I thought that could be a fun "filler" problem or such. And maybe the follow up is to have the students write about the pattern and then make up their own.
I also bought this pattern on Etsy for a future trip I have that involves little girls to make things for.