Nope not much. Parents often indirectly direct imaginative play which kind of goes against the principles of it in the first place.
Tbf I did choose to have more than 1 DC close in age for one of these very reasons. I have put up with my fair share of imaginative play in the early years but found it better for me to lay things out to play with.
I participate in organised things like crafts, baking and drawing. I also play loads of Lego, Duplo, trains and tbf I can get stuck in with toy animals 😅. And I extensively play console games with them like Minecraft, Nintendo games. And board/card games too. Anything family friendly and co-operative. So essentially, I participate in things I actually enjoy sitting down and doing with them.
I am also constantly ferrying them somewhere, be it the park, soft play, the library, swimming, and I let them accompany me wherever I can. Try to give them as much opportunity to run around like wild monkeys whenever I can as we live in a flat so I do like to get them out and about!
On balance, I feel like I do plenty with them even if I'm not one of those imaginative play type mums. I have done it and they do enjoy it but we are all human and it takes a lot of time and energy and sanity to raise DC, so I have to give myself a bit of a break and I hope other parents do the same!