A long time in the making, I present my very own Houndeye!
lent me his considerable skill and built the electronic components, and we constructed the hidden button panel together. I recorded the sounds, and made the rest of the Houndeye (all hand-sewn). I used in-game screenshots as a guide, and no pattern.
This lovable little chap is incredibly cuddly (like a heavy cushion), and boasts a pokeable eye. Four of the buttons can be pressed to trigger playback of four different Houndeye sounds.
I put myself in the photo this time to show you how big the Houndeye is. Also I'd love to be a scientist working for Black Mesa.
So now I've made headcrabs, a Vortigaunt, a Barnacle, the G Man, Gordon, and my own HEV suit. Must. Resist. Urge. To. Construct. Bullsquid.