Jizz

Here's a fairly easy how-to on building a very cheap dildo attachment for the Wahl vibrator/massager. DIY details in the text.

BdsmDIY

DIY Cum Shot Dildo Facial

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DIY big sheath; also has an insert for use in a strap-on

dildo

(NSFW) A review for a DIY kit to mold your own penis into a dildo

amazonreviews

Turns out headphone stands make a great DIY dildo rest!

Dildo_Gifs