I love threads like this one because I could have written it. It makes me feel all warm and happy knowing that other people's ILs are like mine. So, thank you Dis'ers.
As for gift ideas for the OP, give the girls some colored pencils and a couple of drawing tablets. For SIL, I'd make a donation to a charity in her name. I did that for my SIL last year. For MIL, tell DH he is going to take his mom out for lunch or dinner for a present. We've done that one. Another idea is that a couple of years ago, we gave MIL 4 hours of DH's time to spend at MIL's house doing whatever chores and maintenance she wanted done. BIL's wife who is a computer programmer always gives MIL the gift of fixing MIL's computer for her.
Whatever you do, don't invest much time or thought because the ILs don't care.
As for gift ideas for the OP, give the girls some colored pencils and a couple of drawing tablets. For SIL, I'd make a donation to a charity in her name. I did that for my SIL last year. For MIL, tell DH he is going to take his mom out for lunch or dinner for a present. We've done that one. Another idea is that a couple of years ago, we gave MIL 4 hours of DH's time to spend at MIL's house doing whatever chores and maintenance she wanted done. BIL's wife who is a computer programmer always gives MIL the gift of fixing MIL's computer for her.
Whatever you do, don't invest much time or thought because the ILs don't care.