you could do what i did with my mod motor mustang parts.
i have a friend who modded Shelby GT 500 mod motors. a common upgrade when making 1000+ rwhp is to upgrade the rods and pistons.
needless to say i had almost 20 sets of rods and pistons. the stock pistons were a somewhat easy sale. the few that didn't sell i scrapped for aluminum. the rods were impossible to sell.

so i did a craft thing with the rods. i made mail box posts with them.
i found a close to proper sized pipe for the big ends. then bolted 2 rods together with the pipe. then found conduit close to the small ends. connected 2 rods together this way and welded them together.. gave everything a coat of krylon silver and was done. took them to Iola swap and sold 8 mail box posts for $50 each in about 1 hr.

or another idea is to make small end table legs with them. then get a glass top for the table. basically take 2 rod and piston sets. attach with pipe at the big end. attach 2 of these together to form a X for 1 side leg. make a matching set for the other side. give the legs a paint job. fix the pistons on the pins at the proper angles and shazam you just made a cool looking end table that might sell for $100+. that probably cost about $30 to make.

i am sure there are other things you could make with them. use your creativity and have some fun with it. you might even make a few $$$ doing so as a bonus.