Here's a cheap way to make a tilted stand for your guitar amps.
The measurements I made for the stand are for my Vox Cambridge Twin Reverb amp that measures 22.5inches x 9inches x 16inches and weighs 40 lbs.
I'm pretty sure most combo amps will fit on this stand.
Step 1: Materials
20 feet PVC pipe (I only used 15 feet)
4 pairs of PVC elbow connectors
5 pairs of PVC T-connectors