Obvious ones: Double hit Farore's Wind (teleport straight up), dthrow to nair (to kick on some characters)
I've gotten utilt to grab to work on some characters at low percents and I just did an autocanceled dair OoS to upair that killed, forget what percent tho.
Also, dash attack to dash attack isn't a real combo, but it puts some characters in a bad position. If the first dash attack lands on a non-floaty at low percents, they either have to challenge the second one with an aerial which is hard because it's coming from below and most dairs are slow, or they can airdodge through it, but that puts them on the ground with a lot of lag, which likely means a grab. Wouldn't work on characters with counters tho.