This caused me a little sinking feeling, since I have a few D4's, and they are the most user-hostile, unpleasant things to handle - they have sharp, jaggy corners and they absolutely refuse to roll in a satisfying manner.
It would be wonderful, I mused, if I could get some 8-sided dice marked 1,1,2,2,3,3,4,4 - they roll much better and are a lot more comfortable. I decided that if I could get some blank D8's (are they still D8's when blank?) I could mark them up myself. To my surprise I found an online shop that has blank D8's - good so far - but then I found that they also have 8-sided D4's! Hey!
Excellent (though that may be August's good break used up already). Anyway, I've ordered a couple - the firm is UK based, so the total hit on PayPal is about £3 - can't be bad. I realise that you may well have drawers full of the things, which is why you are yawning, but I haven't seen them before - I had merely thought what a great idea it would be.
The online shop is new to me as well, but they look very impressive - worth a browse. Just the place to buy those weird dice you never realised you wanted. The Dice Shop - good name too, eh?