Fisher price garage. Big enough for him to stand up and hold unlike the elc tiny one.
Fisher price walker.
ELC cars.
They'll keep him happy. Think about making nappy changes as quick as possible and easy to do one handed (you'll need the other one to pin him down!)
Feeding chair with secure straps - if he's a list be wire who likes to throw himself from side to side (like my ds)
See if there are any NCT sales on in your area as you'll get some real bargains (if you offer to help you'll get in for the preview shop). You can never have too many stair gates! (NCT are for parents of kids up to 1000 days old so you could join a local committee - good way to immerse yourself in this new world.
Buy about 4 sippy cups. Better to have too many than too few. Set up basket/bag in car for nappy change stuff. That way you only need to carry 1-2 nappies, 1 pack wipes and sudocreme in a tube in your bag. Look where you put your bag when you come in the house. It needs a spot so it's in view and you remember to replenish stocks before you go out.
Buy small containers for all the bits of food you need. One for cutup grapes, one for bits of cheese etc etc.
Look for classes, baby groups with plenty of opportunity to crawl, toddle and move around. The more active the better.
He'll be big enough to sit in a push trike - the more you spend the easier they are to push - good if you plan lots of walks round the park.
Hope that helps.