Lens cap & flash hotshoe plastic thing majig
The hotshoe think amajig can be found on Ebay for a fraction of the price that Olympus will sell it to you.
The lens cap from Olympus with the center pinch works great on the 14-54 lens, even with the hood in place. You can order these from Olympus or most retailers. There are lots of aftermarket lens caps available but these look good on the Olympus camera too.
I'm only concerned about the hot shoe cover when I'm shooting around water. Otherwise it's usually in a little old film box where I keep all the small parts. If you order one, get the PC f;ash sync port cover and remote shutter cable covers too. These are all little parts that all get lost once in a while and may cost more to ship than they cost to buy.
Try these links for parts:
***FCAS Member #128, Oly Division***