A lot of it is mundane and repetitive, there’s only so much lining up of cars that I can do (although it’s preferable to the imaginary play 4 and 5 year olds like).
I have older children too so have lots of school runs and after school activities to navigate so it’s not quite as chilled as for other posters.
Doing stuff can be a bit why do I bother sometimes when it takes you 20 minutes to wrestle them into outside clothing, you get out and they wee themselves, they refuse to hold your hand and try to leg it onto the road, they stop and look at every single stone and worm and try to step on every dog poo, they have a huge tantrum when it’s time to leave and it takes you another 20 minutes to wrestle them back into their shoes and coat and they spend the whole way home screaming at you…
I’ve done a whole mixture of hours since having children and in many ways it’s easier to work when they’re babies and toddlers than once they’re at school but I also love being at home with them and seeing them develop because they change so much in those first few years. Obviously if you work you still see their development but it’s not the same as being with them all day and seeing their little interactions etc. Just things like using an open cup to drink, the children that were in childcare as toddlers learnt that there and could just do it one day as far as I was concerned but the ones that were at home with me I had to teach to do it with sometimes hilarious and often frustrating results 
On the downside I do rely a bit on the digital babysitter while I get chores done so he does miss out a bit compared to if he was in childcare.
I seem to have listed mainly negative things but it’s a real mixture and I love it in the main!
In terms of cost I go to a couple of cheap playgroups a week (£1/£1.50)and have a pass for the local farm park and softplay. Other than that we go to outdoor spaces or sometimes to the local museum which is free. Other than that he just gets dragged around after his siblings a lot.