I was wondering how I could practice arpeggios and sweeps without going through songs trying to find one. Or a way to easily come up with good sounding ones by myself to practice on.

Since there is like for speed you can just practice going 1-2-3-4 up and down the strings and fretboard...etc

Please don't be like "take a chord and play it broken..there ya go" b/c thats obvious...
just download the STEAL THIS VIDEO : sweeep picking lesson here in ug
its a very good lesson.

or im alright by neil zaza has some great not so hard sweeps
hope it helped
the song smoke and mirrors by symphony X has a very good sweeping intro it sounds awsome. =D