I have the same age gap. DS1 is now 25 months and DS2 is 3 months. For me it was way harder being pregnant with a toddler than having a newborn and toddler. I use my wrap and mei tai a lot as DS2 gets the constant contact that he needs and I can still play with DS1. I bf and have just mastered feeding in both slings which has made life much easier.
I also find that getting out of the house does us the world of good. I stick baby in the sling and head to the park/soft play/whatever. The toddler then feels like he's getting me to himself and baby is usually asleep. If you have someone to help you on trips out even better. My mum is now retired and regularly joins us for trips out. She sits with the baby while I play with DS1 and run around with him.
On days in I must admit that we have cbeebies on far to much, but needs must at the moment. We've had a few days recently where I've been awake for 20+ hours, cbeebies became my best friend!
I try to make sure that while DS2 is napping DS1 and I do something nice together, at least for one nap anyway, I have to fit housework in somewhere! Today for example we made and decorated some buns, yesterday we played with play doh, the day before we made puddles in the garden, pulled on our wellies and jumped in them. Little things, just to make him feel important.
Generally for times when I'm busy with the baby we use sticker books, colouring, a DVD, the sandpit, car mat etc
This period of time is very short, before long they'll both be running around playing together, that thought makes the tough times very worth it.